Comcast ipv6 router
Comcast ipv6 router. In this post I want to show you how easy it is to set up IPv6 using pfSense as the router, and Zen Internet (UK) as the ISP. Check it out Here, you can adjust various settings, such as IPv6 DNS addresses and IPv6 firewall settings. Isolated problem to IPv4 addresses not being routed or handled correctly, but ipV6 does. Mikrotik RouterOS But I'm talking about the address of Comcast's dhcp server itself. The router they forced on me is a Cisco DPC3941B v1. I can verify this is passing through the Comcast network using TCPDUMP on the WAN interface connected to Comcast. I have four vlans configured on OPNsense. I just want to Comcast's IPv6 actually works really well, a lot of providers do not implement it as nicely as they do. If you want to remain on the Comcast Business account using the SB6121, you can switch to a dynamic IPv4 address and fill out this form to get a /56 IPv6 subnet wherein you can have static IPv6 addresses there. Like many others, if I specify a static address on my network's router, I'm able to send data outbound, but the Comcast modem doesn't have a route in its routing table for incoming traffic. IPv4 works fine on my local network with the C54 router in place but IPv6 address info doesn't pass through the router. 185-189, use the router's public IP x. However, the TC does not seem to receive Comcast enabled IPv6 in my area, so I wanted to try end to end IPv6. AS7922 IPv4 Route Propagation. I have Comcast, and just enabled IPv6 through EdgeOS GUI (by adding an IP address to my "Internet" interface using the "DHCP for IPv6" option). The TP-Link router disabled IPv6 by default, but I enabled it (I inputted Routers obtain IPv6 prefixes using DHCP-PD User Router, aka Cisco 2800: a router plugged into the CBR-T that translates IPv4 to a Private LAN. I'm trying to find information on how to setup ipv6 on my router, I have a router with a current build of DD-WRT firmware. 5. Official Reply I've recently replaced my Netgear RAX80 wifi router with a Unifi UDM-Pro to manage my home network. It got a /64 right way - so far so good. 0 router stopped working with IPv6 yesterday. One more bit of basics. If you do not see a link for the Comcast Business SecurityEdge subscriber portal, or you are not able to access the subscriber portal, please contact Business Customer Support at (800) 391-3000. Does not have router capabilities or support LAN DHCP; Cannot have a fixed Static IP assignment . Enable IPv6 Router Advertisement (IPv6 RA) Checked IPv6 RA Priority High DHCPv6 Range ::2 - ::7d1 Under the Firewall for Rules IPv6 for WAN IN, set: I can get the IPv6 but, not the IPv4. I do have a Comcast Business Any info on how to setup IPv6 with comcast/xfinity? Connection type ative, passthrough, etc? What about settings for DNS? Thanks. I don’t think speed tests run on the router are reliable once you get over 800 Mbps or so. Received text about COMCAST upgrade and then internet traffic was intermittent afterwards. I had Comcast and my Cisco RV34x router working fine with IPv6 there. my questions: (Native ipv6 from isp) or (DHCPv6 with delegation) and after that the other details. If the CONNECTED DEVICE button doesn't appear on the page: Open a new browser window, follow Steps one and two from above, and go to Connected Devices > Devices . If you are reading this it is likely you were like me, on the edge of giving up on IPv6 on your network. Next, I was given a Cisco router that looks like the residential ones. com the only IPv6 feature not On the WAN side DHCPv6 Prefix Delegation size is set to 64 and the the router has a delegation prefix ending in ::64 so I think that I am getting the /64 prefix as I've recently replaced my Netgear RAX80 wifi router with a Unifi UDM-Pro to manage my home network. As members of the Digital Care Team here at Xfinity, we can help with a wide array of concerns including troubleshooting, billing, plan changes, and more. Comcast Business customers can select devices from the following equipment list that are capable of running in bridge mode: equipment options. Hosts running IPv6 connected to the router can connect to hosts on the Internet. PC Wired Directly to Router with 50ft Cat6 Cable (Cable has been tested and issue still happens on another cable). I notice, however, that Comcast's speedtest site has a little icon labeled "Protocol: IPv6," and sure enough, ipconfig shows that the laptop was assigned an IPv6 address. If your Internet connection is through an Ethernet cable from the wall instead of through a DSL / Cable / Satellite modem, connect the Ethernet cable directly to the router’s Internet port. Looking for help from folks familiar with the Comcast business modems currently being deployed for customers. I turned on IPv6 in my router because I read it makes xbox online gaming much better according to microsoft, but im wondering if anyone can explain to me whether i should How To Enable IPv6 On Xfinity Router (How To Set Up And Enable IPv6 On Xfinity Router). (including TWC and Comcast). There are routers such as the ASUS RT-N66U or the Netgear WRN3500L where you can run open source firmware like TomatoUSB to enable the How do I switch my Xfinity router from IPv6 to IPv4? Thank you! Question IPv6 Setup with Comcast/Xfinity. The IPv6 address and prefix length of the router WAN interface. The router then uses this address for the clients behind the router (on the LAN side). PC's was not getting a IPv6 address until going into the router and changing the ipv6 connection from disabled to "Native". If you have not already, please review both the Posting Guidelines and Rules here on the sub. Picture 1 is my modem (and where I see the IPv6 only message). Hello all, I put together a blog post showing how I set up IPv6 on my home network using an EdgeRouter Lite with Comcast. Read this guide to learn how: 2 ways to update the firmware on a TP-Link Wi-Fi 6 router. This worked great after I figured everything out. Ping responses can easily be delayed or even time out because the router is doing its job. If the /56 has only been routed to the outermost router, you might not yet have a prefix routed to the innermost router. Picture 4 is the router on Comcast's network without IPv6. the correct setting for comcast ipv6 is the DHCP with PD option. net where you will see at the top of the page the current status in your region. I had no issue getting speeds to 2 devices exceeding 1300 Mbps. 10. I have confirmed my modem supports this (Arris SB8200). IPv6 FORWARD drop, (##) Attempts, date and time . ) I've been trying to follow the directions from these links: Press Connect to use IPv6. I set this up - had it working and getting a 10/10 from the COMCAST IPv6 test page and 19/20 from here: IPv6 test - IPv6/4 connectivity and speed The only major change in my home was removing the NETGEAR ORBI as my router and replacing it with the pfSense box. Learn how to troubleshoot your Xfinity Internet and WiFi connection using the Xfinity app, Xfinity Assistant, and xfinity. but yours does technically support IPv6, at least according to Netgear. FW. VPN Client Pre-Installed. Then you can use the Orbi router in Router mode. You appear to have no IPv6 at this time. Thread starter JohnD5000; Start date Feb 22, 2020; log in to the router again and look for the ipv6 address: LAN IPv6 Address 2601:xxxx: LAN Prefix Length 64 LAN IPv6 Prefix 2601:xxxx: RT-AC68U H/W Ver. Since I'm not a business customer (and don't have Gigabit Pro yet), I'm trying to figure out how to properly configure the UDM-Pro to match what the Netgear (and before that Apple Airport) routers seemed to do automatically. It's currently a Linksys WRT54G running DD-WRT, but it's a micro so it's not IPv6 capable that I After a recent planned downtime for Comcast to make changes to the network in my neighborhood, I find that I am no longer getting IPv6 connectivity. This shows outbound through the modem and FW as a client to another server things are fine with my build. The Comcast equipment is a Cisco type-BWG model-DPC3939B Business IP Gateway. 3_d31 & MTA Application - Prod_19. After combining a few small pieces from posts outlining Comcast Business IPv6 using Ubiquiti EdgeRouters along with the USG Advanced Configuration guide I was able to get something that not only works correctly, but persists correctly also. But there is no specific setting on the "IPv6 Setup" page for DHCP and DNS behavior. Configure as below and then reboot the UDM. Ever since getting this modem I cannot get IPv6 to work properly. I can give a device (computer, router, whatever) on the local net a static IP in my public range x. We'll maintain support for IPv4, while adding support for IPv6. AS7922 Comcast Cable Communications, LLC AS7922 IPv6 Peer Count. My question is how do I completely disable the Firewall? Do I have to call comcast to get this done? My other statement / question is why the explicit can't Comcast provide a router that allows admins to manage DHCP better. But Comcast is still listed as my IPV6 DNS server, I think because of the automatic switching back to it t For context, my gatway is the CGA4131COM and I'm using an OPNsense 22. This uses Cisco IOS router commands for configuring the Cisco Assign an IPv6 address to your WAN interface that's in the same /64 that it was in previously when using DHCPv6 or SLAAC/autoconf before. However, a few days ago, Comcast changed my public IP address from IPv4 to IPv6. Those replies include Comcast DNS servers. Test IPv6 large packet = timeout. Primary DNS: 2001:558:feed::1 Secondary DNS: 2001:558:feed::2 The settings on my router are slightly different. Login to the web interface and go to Interfaces > WAN. Comcast offers IPv6 and I want to deploy it on my network, at least on a couple of my VLANs. Find IPv6 Service Provider = timeout My router (Arris SBG10) has IPv6 DHCP enabled for both the WAN and LAN. st/3y3uW9V. 2 Set Hi all, I have a comcast gateway router so I can't disable its DHCP server as far as I know, I have the Gateway set to the static IP of the pi-hole for IPv4 and it is blocking IPv4 requests just fine. Thought it was my router or modem but turns out I had IPv6 off and once I turned it on, the lag got fix and my download speeds are now stable. I can perform a IPv6 traceroute (traceroute to 2001:4860:4860::8888) from the router and clients behind the router are getting autoconfigured IPv6 addresses but no IPv6 traffic will pass from the clients behind the router. set interfaces ethernet eth1 ipv6 router-advert prefix ::/64. 2nd - check that your router received an IPv4 address from Comcast. The router is set for a DHCPv6 WAN connection with a 64-bit prefix designation and IPv6 SLAAC LAN address assignment. set interfaces ethernet eth1 ipv6 router-advert managed-flag true. Router - I'm currently populating the field with the WAN IP Address from the modem WAN Status webpagebut there are other fields that might be right: WAN Default I have Comcast Business as my ISP and have a Cisco 3941B Business Gateway. If your RB is behind the Comcast router (not in bridge mode), then both devices get a WAN IP and LAN IP. 2 hour call with Comcast support and trying 10 things with the gentleman (great guy, probably the best Comcast support guy i've ever gotten so far tbh) and he confirmed with what I thought of everything looks fine inside of the modem. Port triggering is a feature on the Comcast router aimed at improving security during online gaming and chatting Click on CONNECTED DEVICE to select the device on your network and auto-fill these fields for the IPv4 Address or IPv6 Address fields. ) I've been trying to follow the directions from these links: The result for pinging any hop after the local router (also a router) follows the same logic - a router's primary purpose is forwarding packets. set interfaces ethernet eth1 ipv6 router-advert send-advert true**_ then enter the command commit. If you are a Comcast customer, you simply need to go to www. type the add address=2601:204:c380:54ff:: from-pool=comcast interface=bridge /ipv6 dhcp-client add add-default-route=yes interface=ether1-wan pool-name=comcast request=address,prefix /ipv6 nd set [ find default=yes ] interface=bridge with this config the router board has ipv6 access and can ping various addresses. The problem only shows up using R8500 I received a replacement yesterday and it has same issue. For your LAN interface, assign it a IPv6 Setup with Comcast Business. Is the IPv6-only service from Comcast cost less? Through one of the translation mechanisms (MAP or NAT64) you should find that most things will work just fine. Supports DD-WRT. WAN I've never actually received an official word from Comcast business that IPv6 assignments are truly static. 190). Basically a "default route" for ipv6. For Ubiquity EdgeOS (or a derivative like a Unifi USG) the following needs to be set (eth2 is the port facing the comcast router) set interfaces ethernet eth2 dhcpv6-pd prefix-only set interfaces ethernet eth2 dhcpv6-pd rapid-commit disable . If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the Orbi router gets from the modem. Is Comcast having an issue After working through the issues with PD from my Comcast router (note: the pfSense IPv6 DHCP client doesn't like having multiple interfaces even if one of them isn't receiving responses), I'm getting a /59 (4020::) along with the 4000::/64 address for my WAN interface. Meaning only your link can get to it. The only thing that gave me trouble when I first set this up was figuring out that I had to turn off the IPv6 Router Advertisements that the ASA does by default and that Comcast really doesn't want to see, which made sense after the fact. Generates the firewall log message below. postconf. While IPv4 has served us well, its pool of available addresses is dwindling. I recently upgraded my internet service to 100+ Mbs and also upgraded my router to gigabit and AC. It started the day that IPv6 was turned on the 11-20. I am running OPNsense 18. Click CONNECTED DEVICE to select the device on your network and populate these fields for the IPv4 Address or IPv6 Address fields. My IPv6 dhcp6c configuration hasn't changed for several years (haven't needed to change it, IPv6 has run great for 3 years at this site with the only hiccups being a couple of prefix changes from time to time). Passthrough doesn't work for Does my current xfinity offer ipv6 address? I'm not sure if my fortigate router is misconfigured or if it's not being provided ipv6 address just wondering no need to keep I configured my router to enable ipv6 but didn't work. Case 1: IPv4 Connection Type is “Dynamic IP” The only thing that gave me trouble when I first set this up was figuring out that I had to turn off the IPv6 Router Advertisements that the ASA does by default and that Comcast really doesn't want to see, which made sense after the fact. Getting IPv6 working with Comcast/Xfinity . Wi-Fi 6, now the norm in most new routers, can take advantage of improved speeds and bandwidth. IPv6 Compatible. Minimum Security (Low): Enables all secure You may have full ipv6 service. Last afternoon (around 4:00 PM PST) my router unexpectedly stopped being able to IPv6 is certainly supported on Comcast/Xfinity on the UDM. Router Advertisements/Router Solicitations via ICMPv6 are how endpoints get the default gateway. Go to the IPv6 settings on your ASUS router; Step 3. I *almost* have it working with public IPv6 addresses on my LAN. AS7922 IPv6 Prefixes Originated. IPv6 INPUT drop, (###) Attempts, date and time. For this guide it is the The Cisco configuration, in brief, is: WAN DHCP connection, DHCP-PD on (64-bit prefix); LAN and RA set for that Prefix. Ah, I see your addition to the ipv6 comcast post. 0 box connected to Verizon Business and Comcast Business service. BONUS: Set how the TP-Link Wi-Fi 6 If they aren't, change those settings, click "apply" and see if that gives your router an IPv6 address in the box which identifies your address (again in the IPv6 tab). The comcast gateway is bridged over the asus rt-ax3000 router. But I'm not I just spoke with a Comcast technical representative and they clarified that Comcast currently does not offer IPv6 addresses when a customer modem is in pass through I'm attempting to setup IPv6 with an EdgeMax router between my Comcast DPC3939B modem. With IPv6 routers can also request one or more prefix delegations (PD) from an upstream router using DHCP. 45 and Why do you need IPv6 pass through? IPv6 passthrough allows IPv6 to work when using a separate router with T-Mobile Home Internet. Some websites and apps on devices work like big name websites, but others do not. 9 behind it and have recently got IPv6 running (mostly) but I'm having trouble with getting Router Advertisements working with the "Track Interface" setting on the LAN interface of OPNsense. Hosts behind my router on an IPv6 subnet can't seem to reach the Internet. com). I'm using a Cisco RV160W router. 0/24 for most people though 10. The WAN interface on my router receives an IPv6 /128 address. Thank you for joining us here on r/Comcast_Xfinity, your official source on Reddit for help with Xfinity services. 123. I have configured IPv6 to be enabled. I had this working but then IPv6 lost connectivity through my clients. The router uses DHCPv6 to get an IPv6 address from the ISP. I have a static IPv4/29 block, and according to the Static IPv6 Rollout Update , my Cisco modem is supported for static IPv6. I've enabled IPv6 in the passthrough mode as instructed by ASUS but the IPv6 test sites show I do not have an IPV6 connection. But I haven't figured out how to do IPv6 yet. Everything is working except my ability to access my LAN from the public side of my router. DHCPv6-PD does work, in the sense that o After experiencing a handful of outages today (2018/2/26) I noticed the following entries in the Event logs on the Comcast modem/router: 2018/2/26 13:04:17 Firewall Blocked FW. I am not impressed with the end-user performance of the Comcast v6 network. I found windows and linux systems on the LAN issue ICMPv6 "Router solicitation" packets. Bridge mode- only get IPv6. STEP 6 Disable IPv6 Traffic. Any guidance? c3560x#sh ipv6 dhcp pool ComcastPool DHCPv6 pool: ComcastPool Prefix pool: comcast-ipv6 preferred lifetime 604800, valid lifetime 2592000 Domain name: minion. BONUS: Set how the TP-Link Wi-Fi 6 The problem appears to be that I lost my IPv6 /56 PD, as my OpenBSD router running wide-dhcpv6 dhcp6c is now only receiving a /64. axis' Like others, I'm having trouble with IPv6 routing - no matter how I set it up, I can't get subnets within my /56 (or the lower /59) to route into my router. I tried the various solutions I found online The static IPv6 is a prefix delegation and if you have an IPv6 compliant router it can accept that prefix delegation and subsequently assign or allow you to assign static IPv6 address it devices attached to your network. Pair your Comcast internet with Xfinity-compatible routers and modem-router combos, Additionally, we ensured that each router is compatible with Comcast Xfinity service. @bill001g - funny you should suggest getting a very inexpensive router for Guest Wifi - therein lies some of the woes of being nerfed by this device. net" it times out. (brand of router does not matter as long as you can Disable the IPV6 network addresses in the DHCP Section) My PS5 connection looks like this below: internet -> cable modem (comcast - DHCP enabled IPV4/IPV6) -> TP Link wireless router (dhcp enabled only IPV4 addresses, but different ip range) -> PS5's I use native IPv6 with Comcast on my AX86u. I had to use wide-dhcpv6-client since none of the other DHCPv6 clients could handle all of getting an address for the ISP-facing interface, prefix delegation, and Comcast's maximum /60 network mask at the same time. I pulled my information from the comcast router for my IPV6 network addresses and set up static addresses on each of my devices. Tested in Washington, DC. I have a /56 static prefix delegated to the modem. Put the modem in bridge mode and lose our statics. In the Internet Connection Type list, select Fixed. Comcast keeps telling me to contact my router manufacturer. x/24 address and route it to the Internet via NAT (so outgoing connections come from the router's public IP, x. The router thinks it has an IPv6 address from DHCP but none of the tools that report your IPv6 IP address are saying "Not Detected I've found the same in my experience. I set ipV6 to native and I get an IPv6 address on the router and on my devices. Comcast IPv6 and Unifi UDM-Pro configuration: Comcast residential Gigabit customer . I have a Google WiFi mesh system, that i activated IPv6 on, but it says it's not getting an ip from the modem. Most routers provide pretty good IPv6 support at this point but unfortunately, there Hi all, I work for a small ftth ISP, and we have been getting customers from the Comcast world recently. pkaan. I am having trouble getting IPv6 routing through the modem to our firewall. TIP: If you want the best performance from your TP-Link router, it is a good idea to update its firmware. I unchecked My ipv6 is working fine over the default /64. The picture shows a big difference in speed between IPV4 & IPV6 If you have a R8500 and Comcast please post a screen shot. Comcast Xfinity compatibility; Overall maximum upload & download speeds; Utilized Wi-Fi standard (802. From there, select IPv6 (or IPv4, if IPv6 is not listed). 50. Please advise how to disable IPv6. Enable IPv6. set interfaces ethernet eth2 ipv6 router-advert prefix ::/64: set interfaces ethernet eth3 ipv6 router-advert prefix ::/64: set interfaces ethernet eth4 ipv6 router-advert prefix ::/64: commit: save # Open Firewall: set firewall ipv6-name IPV6WAN_IN rule 50 action accept: set firewall ipv6-name IPV6WAN_IN rule 50 description 'monitor. so your clients are being configured by the comcast router instead of SBS 2011. The C54 router is connected directly to my own cable modem using Dynamic IP to Comcast cable. The hosts will need access to DNS servers that can provide AAAA IPv6 addresses, but this can still occur over IPv4 links. I set the time capsule to Automatic ipv6 configuration and Native ipv6 mode. Save and Recently I noticed my internet ping being unstable while gaming. Typical Security (Medium): Allows access to most sites and services, but blocks all peer-to-peer applications. The static IPv6 is a prefix delegation and if you have an IPv6 compliant router it can accept that prefix delegation and subsequently assign or allow you to assign static IPv6 address it devices attached to your network. On a Mac. Quality of Service. AS7922 IPv4 Prefixes Originated. HI this is what I ended up doing its still not working quite yet but i believe i am closer. I have a score of 19/20 on IPv6 test. The IPv6 address of the default IPv6 gateway for the router's WAN interface. I seem to be able to get a DHCP IPv6 address at the router (WAN port 1 reports an IPv6 address up in IPv6 is certainly supported on Comcast/Xfinity on the UDM. In fact, I recommend doing this anyway, for a myriad of reasons, not just limited to Comcast and IPv6. Asuswrt-Merlin Serving IPV6 Router IP Instead of The way comcast allocated IPv6 to customer devices used DHCP-PD and details may be non-obvious. Recently I migrated my telephone service over to my Comcast business account to save money and I was forced to switch to the new Technicolor CGA4131COM. After digging in the router settings and doing some troubleshooting, it appears that I am not getting an IPv6 prefix delegated. 3T software, and I'm trying to get it connected to the Comcast 6RD IPv6 routers. I've recently replaced my Netgear RAX80 wifi router with a Unifi UDM-Pro to manage my home network. FW: IPV6 Input Drop 374 Attempts - Firewall Blocked The Comcast IPv6 DNS servers will be prepended regardless of any other setting, static or dynamic. I tried bypassing my router and connected my PC directly to the Arris SB8200 modem and when I goto https://test-ipv6 I've used xfinity for 6 years and always had ipv6 connectivity. My understanding is that Comcast issues a /56 prefix delegation (Comcast Business in my case), but somehow pfSense isn't properly utilizing it, maybe because the NetGear device provided by Comcast is the router getting the DHCPv6 allocation and pfSense isn't able to grab multiple /64's to issue I configured a second router/firewall as to not interfere with the current network getting IPv6 addressing by mistake. 464xlat has a few problems: Increases latency (~10ms in my testing). Comcast is sending me ipv6 router advertisements. Simple recipe for using native ipv6 on an OpenBSD router from Comcast. Perfectly normal. x. Issue with Comcast cable on Linksys or Cisco routers (and others) involving throttled download speed on ipv4. These settings are editable, once you log in to the device, via the Gateway > Connection > WiFi page. The best course of action is to bridge the router and use your own router/firewall. Picture 3 is the same router in a differnet state with working IPv6 (to eliminate any "router isn't supported" issue). IPv6 FORWARD drop, 7206 Attempts. T-Mobile's network is IPv6-only and uses 464xlat to enable IPv4 to work. Choose the option to disable IPv6 traffic within these settings. It is a valid address but its not routable. The default gateway for an IPv6 will show up as a link-local address (fe80::) used for router advertisements and IPv6 auto configuration. This recipe does not include any pf modifications you may need to make for your ruleset. If no prefix is routed to the innermost router, then the first thing you need to do is to get the outermost router to route a prefix to the innermost router (a /57 or a /60 would AS7922 Comcast Cable Communications, LLC Network Information. Its only giving out IPV6 address and I need to log into it to make changes. If it did not, make sure you have enabled dhcp client on the router. When I use ipv6 the devices show up under the "IPv6 Clients" section in the System log for IPv6. 1 Set Native IPv6 connections on your ASUS router or mesh Wi-Fi; Step 3. I did a packet capture on the WAN interface and analyzed it with Wireshark. If I connect directly to my Surfboard modem, I get an IPv6 address, but of course I have a router for all of my devices. Press Connect to use IPv6. This comprehensive guide will walk you through Router only giving out IPV6 address We just had out Comcast Business Class modem/router replaced. 0/24 works as well) available and that dhcp server is enabled. If my ISP would give me a /56 instead of a /64, I could just plug in the router, turn on IPv6-PD, tell it which interfaces to delegate to, and it would automatically just work. The router thinks it has an IPv6 address from DHCP but none of the tools that report your IPv6 IP address are saying "Not Detected" for IPv6. I have a 3939B from Comcast, and I have been told it's the most up to date modem adn should route IPv6 to my firewall. :1 link-local ipv6 address COMCAST_PREFIX : I am using Comcast's residential service with an RV340 and a NETGEAR Nighthawk Cable Modem with Voice CM1150V. This will likely be a /128 IPv6 address (it is in the case of Comcast). Select DHCP6 in IPv6 Configuration type. If the CONNECTED DEVICE button doesn’t appear on the page; Open a new A DHCP release/renew on the clients produces a local IPv6 address (fe80::). Test IPv6 without DNS = timeout. The IPv6 default gateway will be the IPv6 link local address of the LAN interface of the Business IP Gateway. In the meantime, this may be one possible IPv6 connectivity stopped working, so I rebooted my Comcast router (Comcast provided SMC), and when it came back up, my LAN IPv6 range had changed. Enable IPv6 Router Advertisement (IPv6 RA) Checked IPv6 RA Priority High DHCPv6 Range ::2 - ::7d1 Under Test with IPv6 DNS record = timeout. Normal Mode - I get IPv4 & IPv6 Anyone with the Netgear ( in bridge mode ) having any problems with this? I am testing this with a wn7 computer directly connect to the Netgear ( comcast modem). Only problem I have seen has been with 'Comcast' - Comcast uses mainly IPv4 servers, where Xfinity The Ubuntu device is acting as a ipv4 router. 3, image CGA4131COM_4. ISP: Verizon Wireless using LTE router Modem Mode: Bridged mode ( Tried both advanced and basic bridge mode) I am looking for the most trouble free router boot process; I am not concerned if lookups are going Comcast as the router boots before DNS over TLS startup has completed; Accordingly, I just take the IPv4 and IPv6 DNS servers which the Comcast DHCP server hands out (or however IPv6 does this) I'm having trouble finding out the proper settings for ipv6 with Comcast on nighthawk rax70. Here is a screen shot from one of our team members who is a Comcast customer: As shown in Comcast’s blog post, if both your regional “CMTS” and your cable modem support IPv6 you will see Ah, I see your addition to the ipv6 comcast post. The Wavlink repeater is blocked by the firewall when trying to connect to the modem/router. The caveat here is that your router is at the mercy of your cable modem in terms of which subnet(s) are assigned to it. 1 as the LAN IP. Sort by: Best Comcast’s IPv6 program strives to make the company’s content available over IPv6. Routers obtain IPv6 prefixes using DHCP-PD User Router, aka Cisco 2800: a router plugged into the CBR-T that translates IPv4 to a Private LAN. With 8 channels down, I believe your maximum download speed is no greater than 120 Mbps; you need a 16x4 cable modem to take advantage of speed I mean a new router would certainly be more capable of keeping up with the throughput of a contemporary internet connection, as well as have UI enhancements which make configuration easier. The router addresses are in fe80::/64, the link-local prefix. Step 2. I figured I will share a trick that made my Comcast Busines IPv6 connection a bit more useful. Leave a comment Cancel reply. D-Link’s firmware was the easiest I saw for IPv6 configuration, but I also upgraded a network running a CenturyLink router that was fairly easy (though a few steps were somewhat obtuse), and another router running OpenWRT, which has excellent IPv6 support. To get it to work for me, I had to try different settings, Also note you may need to restart the router between changes. You will receive an email from them with information like this: In addition, with static IP addresses also comes with a static IPv6 prefix delegation. IPv6 clients will always use the router as DNS, then dnsmasq will use any of the IPv4 or IPv6 DNS servers upstream. Checking the router I have a pfSense 2. The FreeBSD devices are ad00::44 and ad00::45, the ad00 being the end of the network address. Went to test the IPv6 and the first test did show an address but stated that the browser will not use IPv6 due to problems. Enter IPv6, the successor to the widely used IPv4. This will allow our Ubiquiti router to use DHCP6-PD straight from Comcast. axis' The Ubuntu device is acting as a ipv4 router. Modem is a Moto MB8600. Last year I did switch to my city's fibre network but the IPv6 configuration was unchanged (just unplugged the router from the Comcast modem and plugged it into the ONT). It's readouts show the IPv4 and IPv6 static delegations. 0. What is Comcast's plan to support IPv6 DHCP-PD? They use the fact they are renting a modem as a way to wedge into all kinds of off-topic questions to Comcast support. With the CGA4131COM, I had to use ndppd when I was experimenting with this modem. I just want to know what the actual setting should be for my Asus RC-3200 AC router. Xfinity brand was first introduced in 2010; Within the last week, Comcast has enabled IPv6 on my modem. x IPv4 address (ipconfig) and working IPv6 (test-ipv6. I am using a laptop plugged directly into the Comcast Router and have the public IP address assigned to the network port on the laptop. 4. Default IPv6 Gateway. 1 running software image DPC3941B 3. Attempting to setup IPV6 on a Unifi USG 4Pro version 5. Here is a screen shot from one of our team members who is a Comcast customer: As shown in Comcast’s blog post, if both your regional “CMTS” and your cable modem support IPv6 you will see One more bit of basics. I have comcast and ipv6 works perfoect for me with the AC66 router. I have a screen shot of the message but it doesn't look like I can add it. Share Add a Comment. Any suggestions on what I can replace comcast's equipment with that will give me control over IPv6 as well as let me use any DNS I want? (currently using OpenDNS) Thanks for any advice, Doug The default gateway for IPv6 is no longer learned or transmitted using DHCPv6, IPv6 router discovery is how hosts or nodes learn their IPv6 default gateway. " Those addresses are always valid on the interface on which they live, but nowhere else. In this video tutorial I will show you how to enable IPv6 on Xfinity 1. Turn off for IPV4 and IPV6 DHCP: Off, I am manually assigning IP's for my test PC on one of the available ethernet Verizon Wireless using LTE router Modem Mode: Bridged mode ( Tried both advanced and basic bridge Find answers to New Comcast Router IPv6 DHCP Screwing up SBS2011 and Exchange from the expert community at Experts Exchange. There are three possible ways that this could work: 1. All the devices on my network (connected to the ASUS router) have ipv6 addresses and work fine on ipv6. My modem is an ARRIS SB8200, and my router is a TP-Link Archer C7. My router is getting proper prefix delegation from the Comcast router and my IPv6 subnet is working correctly. So far my setup is a follows: I have the same setup and rebooting the router broke ipv6 with google fiber :( if I connect my asus router (all default) or my windows 10 pc directly to google fiber I get IPv6 - I wonder what is set interfaces ethernet eth2 ipv6 router-advert prefix ::/64: set interfaces ethernet eth3 ipv6 router-advert prefix ::/64: set interfaces ethernet eth4 ipv6 router-advert prefix ::/64: commit: save # Open Firewall: set firewall ipv6-name IPV6WAN_IN rule 50 action accept: set firewall ipv6-name IPV6WAN_IN rule 50 description 'monitor. Keenan Senior Member. A little weird, but not entirely "bad. Everything else was pretty basic IPv6 setup and closely matched the IPv6 Prefix Delegation docs at the My router (Arris SBG10) has IPv6 DHCP enabled for both the WAN and LAN. IPv6, with its vastly larger address space, is the future of internet connectivity. lab Active clients: 0 c3560x#sh run ipv6 dhcp pool ComcastPool ! ipv6 dhcp pool If you are a Comcast customer, you simply need to go to www. The Comcast router always sends 2001:558:feed::1 and 2001:558:feed:2. Configure the IPv6 settings on your ASUS router or mesh Wi-Fi. I'd like to statically route an additional /64 to my internal router. That combination was working until about 1 or 2 weeks ago when this problem began. Why do you need IPv6 pass through? IPv6 passthrough allows IPv6 to work when using a separate router with T-Mobile Home Internet. STEP 7 I'm setting up IPV6 for my home network and by default, Comcast is assigning a 64-bit prefix delegation size, which allows only 1 subnet. If you just want to see what IPv6-only feels like, it is easily done with a second OpenWrt router. The screen adjusts: Configure the fixed IPv6 addresses for the WAN connection: IPv6 Address/Prefix Length. Additionally, all IPv6 DNS lookups are "intercepted" by Comcast and redirected to their IPv6 DNS servers. 1. The ORBI is still here, but is in Access Point mode, as I only have one CABLE The VPN provider asked that I contact my ISP (Xfinity ) to see if IPv6 can be disabled on my Xfinity XFi gateway/ router to only use IPv4. We can make sure their CM is online and acquiring an IPv6 but supporting that kind of networking configuration is beyond us. The key things to configure are. Don’t bother to call them, resistance is futile. When your area Comcast's support of IPv6. There are tricks to change that behavior using dnsmasq. With the lack of information on the Netgear CD300DCR trial for IPv6, all I can do is surmize: It gets a /56 from the CMTS or Comcast BCI DHCP servers and presents that on the LAN; my router (Ubuntu) pulls a /64 which it allocates to my "WAN" interface; using wide-dhcp and a prefix of ::/64 I can get it to allocate an IA_PD for my "LAN" interface; The settings on my router are slightly different. Part #3 of 3 Guide to Copper business static IPv6 setup from Comcast and DHCP-PD on the Comcast CBR-T. IPv6; Primary DNS: 2001:558:feed::1; Secondary DNS: 2001:558:feed::2; Xfinity is the trade name of Comcast Cable Communications, LLC, a subsidiary of Comcast Corporation, used to market consumer cable television, internet, telephone, and wireless services provided by the company. This is commonly abbreviated DHCP-PD. You see, some routers seem to expect that the dhcp server replies from a source address in the fe80 subnet. Go to Advanced > IPv6. These ISP routers are all built around crummy little CPU's that are barely able to handle the needs of just passing packets from interface to interface. (I'm on a Comcast cable modem. Try setting that and saving/rebooting your router. No luck, pinging a site just returns the IPv6 address and if i try "ping -4 comcast. In the Comcast modem interface, I am able to specify static routes for IPv4 targets, but not for IPv6. 1 box as my router/firewall. I was lucky enough to speak with a Comcast tech who verified that my current MB8611 has a valid IPv6 /64 address. After experiencing a handful of outages today (2018/2/26) I noticed the following entries in the Event logs on the Comcast modem/router: 2018/2/26 13:04:17 Firewall Blocked FW. You can view your current IPv4 address at https://comca. I mentioned it in a previous post. For the connection type, I have options for disable, native, static IPv6, Passthrough, Flet's, and Tunnels. The Comcast router gets your public IP from Comcast; it presents 10. I have the Cisco 3939 modem. The default gateway for IPv6 is no longer learned or transmitted using DHCPv6, IPv6 router discovery is how hosts or nodes learn their IPv6 default gateway. I logged into the modem, checked "Assign DNS Manually", entered the address for my local nameserver, clicked "Save", and it appeared to save it. A few IPv6 tips though as a first-timer: Make sure you have proper firewall rules in place on your router, because with IPv6 each I'm reading the manual for my customer-owned wireless router and it says to get the IPv6 settings from the ISP. My understanding is that Comcast issues a /56 prefix delegation (Comcast Business in my case), but somehow pfSense isn't properly utilizing it, maybe because the NetGear device provided by Comcast is the router getting the DHCPv6 allocation and pfSense isn't able to grab multiple /64's to issue With the lack of information on the Netgear CD300DCR trial for IPv6, all I can do is surmize: It gets a /56 from the CMTS or Comcast BCI DHCP servers and presents that on the LAN; my router (Ubuntu) pulls a /64 which it allocates to my "WAN" interface; using wide-dhcp and a prefix of ::/64 I can get it to allocate an IA_PD for my "LAN" interface; Simple recipe for using native ipv6 on an OpenBSD router from Comcast. If you do, you need to disable the router and firewall on either the Comcast box or Linksys box, or just remove the Linksys device from the network. These all show up as a /64. The IPv6 screen displays. (the mobile networks use 464XLAT = translate the customer's IPv4 to IPv6 on the phone/router and route it to a stateful NAT64 router on your upstream edge) So, should I give Comcast back their Cisco modem/router/wifi box and buy my own modem/router? I am using a Eero mesh network for wifi. 3rd - check that your router has a pool of NAT addresses (192. My laptop also thinks it has an IPv6 address on the local network, but can't ping any IPv6 addresses. LAN2SELF DROP, 3 Attempts. How do I log into the web-based Utility (Management Page) of the TP-Link wireless router? 2. As it so happens, one of my wired ports off of this Gateway is a LAPN600 AP and the device kinda does what I want it to - I know it's up and running because I can still see it broadcasting the old SSID I was using for all Router only giving out IPV6 address We just had out Comcast Business Class modem/router replaced. Comcast changed the modem from the Netgear CG3000DCR to the SMCD3G. The way the Comcast modem handles ipv6 is pretty rudimentary but it works. This screws everything up. Everything works great and I used to have ipv6 working, but noticed the router is no longer pulling a ipv6 from the modem and no ipv6 DNS entries are shown. Does xfinity support IPv6 in zipcode 34287 ? I'm using a Hitron CODA56 (a model that is recommended in the Comcast compatibility list), and an ASUS RT-AX86U router. Scenario 3. My computer is running Windows 10. IPv6 INPUT drop, 4319 Attempts. I had everything set as using dhcpv6, /64 subnet, The hardest part is the lack of information on Comcast ipv6 in any of their forums. . 4p6s2_PROD_sey). Next, you'll see the following options: Maximum Security (High): Blocks most applications except web browsing, email, iTunes, and VPN. -Jon They received their public IPv6 address prefixes via Router Advertisements from the router, and the normal EUI-64 process. If your router doesn't support configuring IPv6 DNS, you could consider disabling IPv6 altogether. According to ipv6-test. Set the prefix to 64 and leave everything else unchecked. My ISP is Comcast. OR, if I set the device to DHCP, the BWG will serve it a private 10. They aren't routeable. Web filtering policies are not getting applied on some or all devices. You won't need a new Comcast device when your area makes the switch to IPv6. When my DHCPv6 expires, or I reboot my router or modem, sometimes it will receive the invalid RA before it receives the DHCPv6 ACK. You didn't say who your ISP was, but the following works on Comcast in areas where they have rolled out IPv6. IPv4 pings time out, tracert times out at router by v6 pings/tracert works just fine. This was working fine just a few days ago. It's currently set to off. I have multiple subnets at home and I want to add support for IPV6. Learn how to change your Xfinity WiFi service set identifier (SSID) and password online. For this guide it is the Cisco 2800. Private / Guest WiFi Network - Choose the wireless network mode that the Business Wireless Gateway will use to set up other basic features, including security mode Thought it was my router or modem but turns out I had IPv6 off and once I turned it on, the lag got fix and my download speeds are now stable. 11xx) I'd been trying off and on to get IPv6 working on my Comcast Internet service at home and kept running into problems that ASA-5506# sho ipv6 routers Router fe80::5a97:bdff:fe2e:a822 on outside, last update 0 min, CONFLICT Hops 64, Lifetime 1800 sec, AddrFlag=1, The message delivered was "No IPv6 detected. Step 3. K. The Cisco configuration, in brief, is: WAN DHCP connection, DHCP-PD on (64-bit prefix); LAN and RA set for that Prefix. Primary DNS: 2001:558:feed::1 Secondary DNS: 2001:558:feed::2 The C54 router is connected directly to my own cable modem using Dynamic IP to Comcast cable. 168. I've set up my internal router to send a router advertisement for the prefix. Linksys says I need some information that only Comcast can provide, but technical support keeps blaming my Motorola Surfboard modem, which I believe is wrong. You will see some messages about Re-generating radvd config file for eth1 and Re-starting radvd: radvd. 2018/2/26 10:58:01 Firewall Blocked FW. To be thorough I disabled Windows Firewall and tried that way too. 9p32s1_PROD_sey. For the Get IPv6 Address Way, please choose Get IPv6 prefix I'm having trouble finding out the proper settings for ipv6 with Comcast on nighthawk rax70. We have a DPC3941B in pass through mode with static IPv4 and IPv6 addresses. It is unclear from your question which of the two routers the /56 has been routed to. Then, the router will use DHCP-PD to request a /64 or larger from the ISP (Comcast gives up to /60 for home users, I think). This article covers how to use the network settings and Advanced Settings in Xfinity xFi using the Xfinity app. The way comcast allocated IPv6 to customer devices used DHCP-PD and details may be non-obvious. The Comcast routers continues to offer IPV6 DCHP and use their own DNS servers in IPV4 and IPV6. I have rebooted both the modem and the routers, and still nothing. That means those routers have default firewall rules to allow an inbound dhcp package only if its source address is in the fe80 range. 2018/2/26 13:04:17 Firewall Blocked FW. Connect the Internet port on your Router to the Modem’s LAN port with an Ethernet cable. Since I'm not a business customer (and don't have Gigabit Pro yet), I'm trying to figure out how to On the modem itself, the modem says it has a valid v4 address along with a v6. Comcast Business customers can set their existing Comcast Business Wireless Gateways to true bridge mode by: But there is no specific setting on the "IPv6 Setup" page for DHCP and DNS behavior. if your router has the options, try "Native" for connection type, and "Stateless" for the auto configuration setting. If I put the modem/router in "bridge mode," it forces me into a single DHCP address, and that is as expected per Comcast documentation. That was the only way to get it to "route" IPv6. comcast6. Inasmuch as this suggests a firmware issue, the tech suggested I touch bases with Motorola. Plug directly into the Comcast gateway and see if you get a 10. x as it's "WAN IP" then presents something else on another subnet as LAN IP. Everything else was pretty basic IPv6 setup and closely matched the IPv6 Prefix Delegation docs at the Trying to add a wifi repeater/extender to my Comcast Business network. the DHCPv6 service on the modem only handles prefix delegation, or handing out addresses on the first /64 on the delegated /56. I am unable to access Comcast Business SecurityEdge subscriber portal. The router at Comcast's end is sending RAs with an invalid MTU of 9192. Once this happens, all IPv6 addresses are removed and my router (and everything behind it) loses IPv6 connectivity. If your router doesn't support that either, your clients will always be able to bypass Pi-hole via IPv6. Picture 2 is my router set to auto-pull IPv6. I cannot get it to obtain a public IPv6 address. 2. Try Connection type of DHCPv6, set Get IP Address as auto, Get DNS server, the LAN setting to use SLAAC as that is what I use with Xfinity. As a result, I then had to go around all the equipment on my LAN that supports IPv6 and manually renew DHCP leases or reboot it to pick up the new LAN IPv6 range. 190 as my gateway, and it's directly on the Internet. The CGA4131COM definitely block 6in4 for me (version Prod_19. 7. IPv6 cannot be disabled overall - even if devices have their IPv6 "turned off", the router will forward v4 to v6 and insert itself in the mix. The Comcast modem is a *router*, not a switch or a IPv6 client, and it should already KNOW where to send the packet based on the entries in its routing table, which it should have added when it gave the downstream device the PD entries. All drivers and firmwares are up to date. All SEEMS to be working with one issue; IPv6. Solved: Hi, I have a new 881 router loaded with the latest 15. My computer on my local network isn't yet getting an IPv6 address (from what I can tell, I'll have to enable that from the CLI), but that should be easy enough to enable - just haven't done it yet. is your router setup to enable ipv6? for some reason, every router I have ever setup does not have ipv6 enabled from the factory, so just might need to enable it. You can use any router you wish that is IPv6 compliant such as I need to get the Comcast Cisco modem to send the IPv6 address of this local nameserver in its DHCP6 and router advertisements. I am using an iPAD where IPv6 cannot be disabled on the device so the they are telling me that IPv6 has to be disabled in the Xfinity XFi Gateway somehow. Is IPv6 in use on my PC? Am I setup correctly? Why does the Comcast test disagree with the TP-Link setup? In my previous post I talked about what I learnt about IPv6. Learn how to configure your Windows 10 network settings for Xfinity Internet. 7_2. If you don't want to use rotblitz method, or if the Comcast router doesn't allow using your own manually added IPv6 DNS resolver addresses your best bet is to add a router "inside" the router provided by Comcast and configure it there. Comcast Only giving me an IPv6 address, but it seems like my router needs IPv4. Here's what I'm experiencing. My Archer C1200 v3. Since I'm not a business customer (and don't have Gigabit Pro yet), I'm trying to figure out how to Manage the WAP configuration settings to meet your Comcast Business WiFi needs. My computer stays there the whole time, but other devices disappear after a few minutes. I’m using the XB6-T modem. Your internet won’t work for a couple of seconds while the router establishes the connection through IPv6. According to the last post to this thread, it stated that Comcast no longer accepts hint for /60 prefixes. Is there some benefit to having IPv6 on a home network for some reason. AS7922 IPv6 Prefixes Announced. 3. com. " When I review the setup for IPv6 on my TP-Link AC1750 router, it shows a connection type of DHCPv6, an IPv6 address, a default gateway, and IPv6 DNS address. AS7922 IPv4 Prefixes Announced. Request IPv6 from Zen Email Zen and ask for IPv6, and it should be ready the same day, excluding weekends. : A1 | Merlin 386. You'd have to consult your router's documentation sources on further details for its IPv6 configuration options. Comcast’s IPv6 program strives to make the company’s content available over IPv6. As with most routers now-a-days, The problem is the Comcast modem is handing out IPv6 DNS to Comcast’s DNS servers which is resulting in traffic trying to go out 74. The internet is rapidly evolving, and with that evolution comes the need for an upgraded addressing system. When I bypass the Netgate I can surf the net using IPv6 so I know that its supported by my ISP which is Comcast. About 5 months ago I got a new router and used the same settings for ipv6 that my last router used. Your RB gets 10. I contacted Comcast support, and they told me my account and area supports IPv6, and i should be getting an address. 11. I currently have an open ticket and am awaiting their response. And the CG3000DCR responds with ICMPv6 "Router advertisement" packets. Hosts get addresses using DHCP (Dynamic Host Configuration Protocol). Static Route: The default route for IPv6 is one of the trickier parts of the configuration.
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