It seems fairly common sense, but cable internet providers such as Comcast and Charter do not openly advertise that you can use most any compatible DOCSIS 3.0 gateway and avoid pay...Static IPV6 only works with /64 or /60, NOT /56. So I've spent parts of 2 days trying to get this to work. I've had my pfsense 2.3.2-p1 box try to request a /56 from my netgear cable modem but I only ever get a /60 back (seen via debugging dhcp in pfsense). I have 2 "lan" interfaces "tracking" the wan, and if I set the wan to request a /60 ...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. 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. Note: I have talked and chatted to 4 …For IPv6, no custom configuration is required on the Business IP Gateway since the provisioning of the IPv6 prefix is managed by Comcast. You would need to subscribe to a block of IPV4 static IP addresses to get the IPV6 static IP's. PTR records can be requested by calling into our care teams through 1-800-391-3000, or you can always …Xfinity internet is one of the more popular broadband internet providers across the country. With speeds of up to 2,000 Mbps or more, depending on your location, you can enjoy grea...Support Internet. What is Internet Protocol, version 6 (IPv6)? Find out whether your home network is ready for the web’s new IP. IPv6 is supposed to replace the old version, IPv4. …Comcast's support of IPv6. A key aspect of Comcast’s IPv6 program is to make the company’s content available over IPv6, as well as to enable IPv6 connectivity across …Whether you’re a new customer or an old one, you know that Xfinity internet is a capable service that makes streaming, gaming, and other online activities faster and more enjoyable...Configure Your Windows Connection Settings. Find out more about setting up your wireless home network by reading Activate a Wireless Gateway, or use one of the following instructional links to get started. Configure Windows 10 Network Settings for Xfinity Internet. Configure Windows 8.1 Network Settings for Xfinity Internet. Configure Windows 7 ...Specifically, when Comcast's router sends an ICMPv6 message of type Router Advertisement, in that message it sets the MTU option to 9192. This is wrong because the IPv6 standard requires that value to be supported by segments. Since I'm connected to Comcast via a cable modem therefore it simply cannot handle this value.Welcome to the Xfinity community! Our community is your official source on Reddit for help with Xfinity services. If you have questions about your services, we're here to answer them. We can help with technical issues, general service questions, upgrades & downgrades, new accounts & transfers, disconnect requests, credit requests and more.Configuration mirrors IPv4 for EDI: a PTP link on the WAN side and a routed subnet for you to use as needed. Everything on the WAN side is static. Assign your designated PTP IPv6 address to your EDI interface, use the provided PTP gateway address as the upstream gateway, set the subnet size as provided, in our case /126 as expected.As you may know, Xfinity recently graded it's network speed to 2.5gbs. That change obsoleted my Motorola MB8600 cable modem, and altered my IPv6 subnet mask from a /64 to a subnet mask of /128, assigning a single external ip address. The MB8600 was quickly replaced with a 2.5gbs capable Motorola MB8611. I had a career in IT; senior …IPv6 connection type. Native. (1) Select the IPv6 connection type as "Native". (2) Click [Apply] to save. (3) Login to router again, when IPv6 LAN setting appear IPv6 information, the settings of the "Native" are complete. Static IPv6. (1) Select the IPv6 connection type as "Static IPv6".Xfinity's IPv6 Support Explained • Xfinity & IPv6 • Learn how Xfinity supports IPv6, the latest Internet Protocol promising endless addresses for a faster and safer online experience....As you may know, Xfinity recently graded it's network speed to 2.5gbs. That change obsoleted my Motorola MB8600 cable modem, and altered my IPv6 subnet mask from a /64 to a subnet mask of /128, assigning a single external ip address. The MB8600 was quickly replaced with a 2.5gbs capable Motorola MB8611. I had a career in IT; senior …Everything else was pretty basic IPv6 setup and closely matched the IPv6 Prefix Delegation docs at the Cisco support site. I hope this helps at least somewhat. In case it matters, I'm located in the Twin Cities in Minnesota, and Comcast has supported IPv6 here for at least a couple years now.Jun 12, 2021 · JKnott @lenhuppe. Jun 12, 2021, 6:38 PM. @lenhuppe said in Enabling IPv6 on Comcast home network: The "DHCPv6 Prefix Delegation size" defaults to 64 on the WAN side and the "IPv6 Prefix ID" defaults to 0 on the LAN side. The proper value depends on what prefix size they provide. Feb 22, 2020 · Thanks. " NATIVE " along with all other default settings will permit you to setup/test IPv6 on comcast/xfinity. The additional recommendations above may come in handy, depending upon your needs. I don't recall needing to reboot, but you may need to afterwards to show your IPv6 address on the firmware page. Not what the router can do. It depends on what the ISP configures IPv6 for there services. 2023-03-31 01:04 PM. I'm having trouble finding out the proper settings for ipv6 with Comcast on nighthawk rax70. It's currently set to off. Comcast keeps telling me to contact my router manufacturer.Provide IPv6 to your LAN including the clients behind it. For step 1 start with selecting the appropriate IPv6 mode, reconfigure the WAN interface and try to ping an IPv6 address or host from the firewall itself, e.g.: Test if ping over IPv6 to Internet is successful (also possible via Interfaces‣Diagnostics‣Ping ).Under Gateway, click Firewall. From there, you can choose IPv4 or IPv6. After choosing either, you will see the following options: Maximum Security (High), which will block most …It has been this way for months. There has to be something wrong with the ipv6 config or some other settings. The modem updated last night in the middle of the night, so I thought I would give it another test. Same, just lags for 10-15 seconds for my android on wifi before it does anything. Load up any app, then wait a good 10-15 seconds for it ...An IPv6 /56 prefix allows 128-56 bits for the subnet but is usually subdivided into /64 subnets, allowing 128- (56+64) bits to represent a /64 subnet, or 2 to the power of 8 subnets which is 256 /64 subnets. Because IPv4 address are in short supply (most comcast customers get exactly one address) an IPv4 NAT (Network Address Translator) is used.PostmasterIf you're having an issue with sending or receiving E-Mail with Comcast. ... Comcast over IPv6? What are Comcast's Outbound Mail Servers? What are ...Check Prefix Delegation. id-assoc pd ID: 0 (or whatever number you put after id-pd in Send Options above) Prefix IPv6-Prefix: xxxx:xxxx:xxxx:1a0::/59 (that is, the specific /59 prefix you want) Preferred Lifetime: infinity. Valid Time: leave blank. In the Prefix Interface section.Check the Provide DNS configuration via radvd. Under Firewall-->Rules -->Lan. Add an IPv6 Lan Net entry to allow IPv6 traffic on your lan, just look at the IPv4 rule for a guide. Make sure you saved everything while doing this and reboot (again). When it comes back up, you should have IPv6 on the WAN interface.IPv6-test.com is a free service that checks your IPv6 and IPv4 connectivity and speed. Diagnose connection problems, discover which address(es) you are currently using to browse the Internet, and what is your browser's protocol of …Add a port forward · Isn't connected to your home network. · Is using an IPv6 address. · Has a static IP set in the Gateway Admin Page.IPv6 not working with Xfinity . I have been trying to get IPv6 working with no success. I have researched the problem on the internet and none of the information I have found has fixed the issue. Read through many configuration articles and OPNsense documents. Tried different settings and reloaded OPNsense then started from scratch.Wan set to DHCPv6. DHCPv6 client configuration. mode basic. Request only an IPv6 prefix checked. Prefix delegation size 64. Send IPv6 prefix hint checked. Use IPv4 connectivity checked. On the Windows servers I used the prefix provided and set static IPv6 Addresses using the prefix with ::2 and ::3 for each.Oct 1, 2021 · My setup is Modem: MB8611 Router: Netgear Orbi RBR20 I set the Orbi's IPv6 setting to Auto Config, rebooted it as well as my modem, but no IPv6 address is detected at https://test-ipv6.com... Configure Settings. Follow these steps to configure Windows 10 network settings on your computer. Right-click on Start. Select the Network Connections option. Double-click on the network connection you are using. Click Properties (you must be logged in as Administrator, or you will be prompted to log in). Click the Networking tab. I figured out how to make ipv6 work with the Xfinity modem in bridge mode (or with any third party modem I guess too). The MAC address of the WAN Ethernet adapter that my router has (and that connects to the cable modem's ethernet) starts with 00:07:43 which is a prefix assigned to Chelsio and used for their adapters.Test your IPv6 connectivity. Your IPv4 address on the public Internet appears to be 40.77.188.226. Your Internet Service Provider (ISP) appears to be MICROSOFT-CORP-MSN-AS-BLOCK. No IPv6 address detected [more info] You appear to be able to browse the IPv4 Internet only. You will not be able to reach IPv6-only sites.btw, Yes, I read that Comcast will be closing their 6RD trial in a few months. But until then, based on what I've read, 6RD is better behaved than 6to4, so I thought I would start my ipv6 experimenting with that first.-----ipv6 general-prefix Comcast6RD 6rd Tunnel6 ipv6 unicast-routing ipv6 cef. interface Tunnel6 description Comcast 6RD IPv6 ...From what we were able to find these prefixes change the number of addresses available to use. It can take up to 24 hours to request a different prefix. Comcast’s IPv6 program strives to make the company’s content available over IPv6. We'll maintain support for IPv4, while adding support for IPv6.Jul 3, 2014 · I am a Comcast business customers and just had my modem swaped out for one that supports IPv6. I have a block of IPv6 addresses but the tech didn't know how to assign a static IPv6 address. He suggested I contact Comcast customer support. Called Comcast support and was told to assign amy global IPv6 address to the router for IPv6 support. This week at the North American Network Operators Group’s 46th meeting (NANOG46) Comcast demonstrated end-to-end IPv6 readiness on its network. Comcast is testing and trialing IPv6 by proactively checking the readiness of our software, hardware and systems. In some cases we’re replacing or upgrading equipment to ensure the transition …I am afraid that I must disagree. 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 test (ipv6-test.com) I would test it every day for more than a week. Then one day I ran the tests again. I got 4/10 from COMCAST page and 13/20 from the other.Configure Your Windows Connection Settings. Find out more about setting up your wireless home network by reading Activate a Wireless Gateway, or use one of the following instructional links to get started. Configure Windows 10 Network Settings for Xfinity Internet. Configure Windows 8.1 Network Settings for Xfinity Internet. Configure Windows 7 ...Are you looking for an Xfinity store near you? Xfinity is a leading provider of internet, television, and phone services. With over 1,000 stores across the United States, finding a...I cannot find the settings on the router using the local web interface, using the Xfinity app, or the Xfinity website. I dont have time to explain why I need to do this as this is not a debate on why I should use IPv6 or how to get around the many issues I have because of it, I just simply would like to know how to disable IPv6 as a Xfi customer.If you are a Comcast customer, you simply need to go to www.comcast6.net where you will see at the top of the page the current status in your region. 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 ...2. Go to Advanced > IPv6. 3. Enable IPv6. 4. Select Dynamic IP (SLAAC/DHCPv6). 5. Go to Advanced settings, Select Auto in “Get IPv6 Address”. Select Enable in “Prefix Delegation”.FW.IPv6 FORWARD drop and FW.IPv6 INPUT drop. I'm currently using the provided cable and the provided equipment. My desktop is hardwired to the modem. I think I need a technician to help me fix this problem. Thank you. P.S. Ironically, the internet cut off yet again when I tried to post this.Under Gateway, click Firewall. From there, you can choose IPv4 or IPv6. After choosing either, you will see the following options: Maximum Security (High), which will block most …The new Xfinity modem only runs through IPv6. If you contact your Xfinity retail store and trade it in for the “XB6” modem. All of your problems will go away. The older generation modems support both so that is why it works. It took me ages to figure this out but I’m glad I did so I just wanted to send this out in case anyone have the ...I had an issue with the Comcast wireless gateway and needed to do a factory reset. I lost all support for IPv6. I called in a ticket, it was escalated. The tech was unable to correct the settings on the modem remotely to enable IPv6. He scheduled a service call for a field tech to swap the modem and assured me that would fix the issue. …@XfinityJosephA I've gone this route and Comcast could not resolve it. They finally agreed that the issue is that IPv6 cannot be turned off of the router and that "hopefully an update in the future" will fix things. That was over a year ago. I even joined all the comcast xfinity subreddits on reddit.com and made them aware of the issue.No longer getting IPv6 address after Xfinity work in my neighborhood. I had a well working setup with IPv4 and IPv6. But there was some big work in my neighborhood today (got email about service interruption and saw several crews working on the street), and now that the work is completed, I now longer get an IPv6 address assigned.Jul 24, 2022 · Sometime early 2022 something happened to IPv6 on my Xfinity Gigabit connection. I am not getting an IPv6 IP. The modem is a Netgear CM2000 which works great. I have tried to with two different routers. When using a Netgear Orbi router I am able to get an IPv6 address if I keep toggling IPv6 on and off several times. IPv6 Configuration Type: DHCP6 Prefix Delegation size: 56 (I found somewhere this was the size supported by Spectrum) Send IPv6 prefix hint: checked Set the LAN interface to track WAN Once it was working, I very quickly discovered that I …Yes and no. 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. The caveat here is that your router is at the mercy of your cable modem in terms of which subnet (s) are assigned ...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 … Note: If you have an XB7 Wireless Gateway, you’ll only see options for Typical Security and Customer Security after selecting IPv6. Select the firewall setting you want. Click Save Settings. Note: A firewall can be set up on both your computer and your Xfinity Gateway, but more than one firewall can cause interference. Additional information Check the Provide DNS configuration via radvd. Under Firewall-->Rules -->Lan. Add an IPv6 Lan Net entry to allow IPv6 traffic on your lan, just look at the IPv4 rule for a guide. Make sure you saved everything while doing this and reboot (again). When it comes back up, you should have IPv6 on the WAN interface.Xfinity's IPv6 Support Explained • Xfinity & IPv6 • Learn how Xfinity supports IPv6, the latest Internet Protocol promising endless addresses for a faster and …The Comcast IPv6 DNS servers will be prepended regardless of any other setting, static or dynamic. Additionally, all IPv6 DNS lookups are "intercepted" by Comcast and redirected to their IPv6 DNS servers. 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.Specifically, when Comcast's router sends an ICMPv6 message of type Router Advertisement, in that message it sets the MTU option to 9192. This is wrong because the IPv6 standard requires that value to be supported by segments. Since I'm connected to Comcast via a cable modem therefore it simply cannot handle this value.Test Your Readiness for World IPv6 Day. IPv6 continues to receive an increasing amount of visibility around the world, in part related to an upcoming industry event called World IPv6 Day, which starts in the evening of June 7th in the U.S. While we continue to have a great deal of success with our IPv6 trials, the industry is concerned that a ...Choose System Preferences from the Apple menu. Click Network. Choose Wi-Fi or Ethernet (whichever one you're using) in the network connection services list. Click Advanced. Click TCP/IP. Then, click Renew DHCP Lease. Open a browser and connect to the Internet. Get complete instructions on how to release and renew your IP address when needed.Jul 3, 2014 · I am a Comcast business customers and just had my modem swaped out for one that supports IPv6. I have a block of IPv6 addresses but the tech didn't know how to assign a static IPv6 address. He suggested I contact Comcast customer support. Called Comcast support and was told to assign amy global IPv6 address to the router for IPv6 support. You can find the gateway, static, and CIDR block using these instructions: View your Static IP information online . If you have any further questions or concerns please reach out through private message with your first and last name, business service address and account number or phone number and we would be more than happy to assist. 0. 0 ...Xfinity Comcast offers a wide range of services, from cable TV and internet to home phone and home security. With so many options, it can be difficult to know where to start when l...From there, you can choose IPv4 or IPv6. After choosing either, you will see the following options: Maximum Security (High), which will block most applications except web browsing, email, iTunes and VPN. Typical Security (Medium), which allows access to most sites and services, but blocks all peer-to-peer applications.Check Prefix Delegation. id-assoc pd ID: 0 (or whatever number you put after id-pd in Send Options above) Prefix IPv6-Prefix: xxxx:xxxx:xxxx:1a0::/59 (that is, the specific /59 prefix you want) Preferred Lifetime: infinity. Valid Time: leave blank. In the Prefix Interface section.Jul 25, 2020 ... Next, set up your Comcast gateway to give out chunks of addresses. Open your admin page to your cable modem, the default username/password ...I have replaced my Router/Modem combo with the new XB7, have had techs out to the house, reinstalled windows, replaced all my cabling, replaced my network card, replaced just about everything but my ISP and I am just now seeing all the CONSTANT IPv6 input drops, Forward Drops, FW.WANATTACK drops by the THOUSANDS right at the …Provide IPv6 to your LAN including the clients behind it. For step 1 start with selecting the appropriate IPv6 mode, reconfigure the WAN interface and try to ping an IPv6 address or host from the firewall itself, e.g.: Test if ping over IPv6 to Internet is successful (also possible via Interfaces‣Diagnostics‣Ping ).On said connection, Xfinity is advertising IPv6 ULA routes as evidenced in the output below (mac address filtered to protect the innocent. Note that ens9 is the interface on my router facing Xfinity): $ sudo tcpdump -i ens9 -v multicast and not broadcast. dropped privs to tcpdump. tcpdump: listening on ens9, link-type EN10MB (Ethernet), capture ...Overview of Xfinity Gateways. Xfinity Gateways and xFi Gateways are all-in-one devices that deliver internet and voice connectivity, whole-home WiFi coverage, network security, control and speed for the ultimate connected experience. General features of our latest devices, the xFi Advanced Gateways, include: Secure wireless home network with ...Terminal. /ipv6 nd. set [ find default=yes ] disabled=yes. The next step is to setup DHCP client. Within a few seconds, you should see the prefix being allocated: Terminal. /ipv6 dhcp-client. add add-default-route=yes interface=ether1 pool-name=general-pool6 request=prefix use-peer-dns=no.Nov 9, 2011 · Technical Details for Our IPv6 Deployment. We have now started our pilot market deployment of IPv6, which is the first of several phases for our IPv6 deployment. This first phase will support certain types of directly connected CPE, where a computer is connected directly to a cable modem. I cannot find the settings on the router using the local web interface, using the Xfinity app, or the Xfinity website. I dont have time to explain why I need to do this as this is not a debate on why I should use IPv6 or how to get around the many issues I have because of it, I just simply would like to know how to disable IPv6 as a Xfi customer.Here's my current implementation to try to get it to work: system --> advanced --> networking == set allow ipv6 (otherwise there's no show) routing --> gateways == set default gateway ipv6 to WAN_DHCP6 (leave ipv4 configured) firewall --> lan --> rules == create a rule to allow lan ipv6 to pass through to the internet.btw, Yes, I read that Comcast will be closing their 6RD trial in a few months. But until then, based on what I've read, 6RD is better behaved than 6to4, so I thought I would start my ipv6 experimenting with that first.-----ipv6 general-prefix Comcast6RD 6rd Tunnel6 ipv6 unicast-routing ipv6 cef. interface Tunnel6 description Comcast 6RD IPv6 ...Firmware version after the Comcast update is V2.01.02 and I'm including the event log and connection status below. The CM1100 is plugged into our firewall (Untangle v14.1.1) with IPv6 config set to Auto (SLAAC/RA). It's pulling a class A IPv4 address (73.x.x.x/23) without issue, but IPv6 is completely blank.XfinityJorge. +18 more. Official Employee. •. 1.2K Messages. 1 year ago. Hello there @Matthewfarnham0 thanks for contacting our Forums team and we are happy to help. You came to the right place for help, are you using your own equipment or ours?Under Gateway, click Firewall. From there, you can choose IPv4 or IPv6. After choosing either, you will see the following options: Maximum Security (High), which will block most …1. go to your xfinity app and do the following: wifi > wifi details > edit wifi settings > security mode: WPA3 - Personal Transition (NOT PERSONAL ONLY). This is …On further inspection, I am actually losing IPv6 connectivity every hour (not every two hours). Rebooting the modem restores IPv6 connectivity for an hour and then the modem stops routing traffic again. So my theory about the problem being related to 2 hour WAN DHCP leases may be incorrect. (Renewing a lease should not break connectivity but ...Windows 10/11. Press Windows and R key at the same time to open the Run box. Type CMD and press Enter. Type ipconfig/release in the Command Prompt window. Press the Enter key. Type ipconfig/renew. Press Enter. Type Exit and press Enter to …Download speed. This number is a measure of how quickly your device gets data from the Internet. It’s expressed in megabits per second — Mbps. Test your Internet upload and download speeds to see how Comcast Business Internet compares to the competition. Get a free quote today for speeds up to 1 Gig.Xfinity WiFi is a network of hotspots that keep you connected to the Internet at WiFi hotspots around town. Access to Xfinity WiFi Hotspots is offered exclusively to Xfinity Internet customers. Xfinity WiFi is included with Xfinity Internet (Performance tier or above) at no additional cost. Upgraded access to Xfinity WiFi Hotspots is now ...Sep 13, 2020 ... It has options to enable DHCP for IPv6 or provide static info. DHCP for IPv6 is enabled and the router has an address, delegated prefix and ...Whether you’re a new customer or an old one, you know that Xfinity internet is a capable service that makes streaming, gaming, and other online activities faster and more enjoyable...Comcast’s Speedtest Now Breaks Out IPv6 Speed Vs IPv4 Speed. UPDATE: 18 March 2021 – Back in 2014 when I wrote this post, it outlined an excellent new tool Comcast had released to compare the speed of your connection over IPv4 versus over IPv6. At the time they were rolling out IPv6 into their networks and were also active with a range of ... Dec 14, 2023 · If you have to setup a dhcpv6 server inside, use a /64 prefix. Set a
The Comcast equipment is a Cisco type-BWG model-DPC3939B Business IP Gateway. It's readouts show the IPv4 and IPv6 static delegations. I'm using VyOS as the routing software on my router/firewall (which is plugged in to one of the LAN ports on the BIP Gateway). It's an OSS fork of Vyatta, parallel to Brocade or Ubiquiti. Today, Comcast’s Xfinity Internet native IPv6 deployment has grown to become the world’s largest IPv6 deployment, as measured by the Internet Society’s World IPv6 Launch Measurements. The Internet Society (ISOC) measures deployment using several data sources, including data from Google, Facebook, Yahoo, and Akamai. 2nd - check that your router received an IPv4 address from Comcast. If it did not, make sure you have enabled dhcp client on the router. 3rd - check that your router has a pool of NAT addresses (192.168.0.0/24 for most people though 10.0.0.0/24 works as well) available and that dhcp server is enabled.Failing to get or losing IPv6 address. I have been using IPv6 on Comcast for several years with only occasional problems, usually following some disruption of cable service that requires reboots of modem and router. Recently, and coincident with some apparent changes in Comcast servers, I am sometimes, not always, able to get an IPv6 … Getting IPv6 working with Comcast/Xfinity. I had this working but then IPv6 lost connectivity through my clients. So far my setup is a follows: System -> Advanced -> Networking -> Allow IPv6. WAN Interface. IPv6 Configuration Type - DHCP6. Use IPv4 connectivity as parent interface - ticked. DHCPv6 prefix delegation size - 64. In this tutorial, and if you have Comcast/Xfinity High Speed Internet and a new cable modem, you have IPv6 support. Go to www.comcast6.net it will display your … Configure Settings. Follow these steps to configure Windows 10 network settings on your computer. Right-click on Start. Select the Network Connections option. Double-click on the network connection you are using. Click Properties (you must be logged in as Administrator, or you will be prompted to log in). Click the Networking tab. @XfinityJosephA I've gone this route and Comcast could not resolve it. They finally agreed that the issue is that IPv6 cannot be turned off of the router and that "hopefully an update in the future" will fix things. That was over a year ago. I even joined all the comcast xfinity subreddits on reddit.com and made them aware of the issue. IPv6 is certainly supported on Comcast/Xfinity on the UDM. I have a score of 19/20 on IPv6 test. Configure as below and then reboot the UDM. You should have a 128/ under 2001: and your LAN should have a /64 under 2601:. When we begin our support for home gateway devices late this year, we initially plan to use a default IPv6 prefix allocation that is a /64 in length, providing over …Jun 30, 2020 · IPV6 - Prefix Delegation Size. Hello, 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. I have multiple subnets at home and I want to add support for IPV6. According to the last post to this thread, it stated that Comcast no longer accepts hint for /60 prefixes. The new Xfinity modem only runs through IPv6. If you contact your Xfinity retail store and trade it in for the “XB6” modem. All of your problems will go away. The older generation modems support both so that is why it works. It took me ages to figure this out but I’m glad I did so I just wanted to send this out in case anyone have the ... Today, Comcast’s Xfinity Internet native IPv6 deployment has grown to become the world’s largest IPv6 deployment, as measured by the Internet Society’s World IPv6 Launch Measurements. The Internet Society (ISOC) measures deployment using several data sources, including data from Google, Facebook, Yahoo, and Akamai. Test Your Readiness for World IPv6 Day. IPv6 continues to receive an increasing amount of visibility around the world, in part related to an upcoming industry event called World IPv6 Day, which starts in the evening of June 7th in the U.S. While we continue to have a great deal of success with our IPv6 trials, the industry is concerned that a ...Open a new browser window, follow Steps one and two from above, and go to Connected Devices > Devices. Click the name of the device for which you want to add the port forwarding rule under Online Devices' Host Name. Highlight and copy the IP address. Return to the previous browser window and paste the IP address.To change a browser’s homepage to Xfinity’s website, open the browser and navigate to the settings or menu page. From there, replace the browser’s default homepage with Xfinity’s w...Please advise how to disable IPv6. I’m using the XB6-T modem. Nov 6, 2019 · You can find the gateway, static, and CIDR block using these instructions: View your Static IP information online . If you have any further questions or concerns please reach out through private message with your first and last name, business service address and account number or phone number and we would be more than happy to assist. 0. 0 ... If you have a Comcast account, odds are good that you get one or more services through Xfinity, a Comcast subsidiary that provides Wi-Fi, cable and digital TV packages, mobile serv...Page Loaded - Xfinity Speed Test - Check Your Internet Speed. Xfinity Speed Test. Let's test the speed to your device. We'll measure the speed from our servers to this device. Results are often lower than plan speeds due to WiFi …Getting IPv6 working with Comcast/Xfinity. I had this working but then IPv6 lost connectivity through my clients. So far my setup is a follows: System -> Advanced -> Networking -> Allow IPv6. WAN Interface. IPv6 Configuration Type - DHCP6. Use IPv4 connectivity as parent interface - ticked. DHCPv6 prefix delegation size - 64.Click "Sign In" if necessary. • Click the "Peer to peer chat" icon. • Click the "New message" (pencil and paper) icon. • Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line. • Type your message in the text area near the bottom ...Hello! I recently moved and after the move I am unable to get an IPv6 Address. Modem: SB8200. Router: Custom PfSense. Currrent PfSense config: IPv6 Configuration Type: DHCP6. Use IPv4 connectivity as Parent Interface: Checked. DHCPv6 Prefix Delegation size: 60. Send IPv6 prefix hint: Checked.For the most part, modems don't care about IPv4/IPv6. It's the router that needs to support it. I used to have a Zoom 5341J, and IPv6 worked on it. Comcast does use IP to access the modem for checking and updates and configuration. That may be v4 or v6, depending on the model, but is not relevant to the end user.Oct 26, 2022 · Wan set to DHCPv6. DHCPv6 client configuration. mode basic. Request only an IPv6 prefix checked. Prefix delegation size 64. Send IPv6 prefix hint checked. Use IPv4 connectivity checked. On the Windows servers I used the prefix provided and set static IPv6 Addresses using the prefix with ::2 and ::3 for each. Go to Interfaces > LAN. 6. Select Track Interface in the IPv6 Configuration type. 7. Select the Track Interface (WAN) and leave the Prefix ID set at 0. 8. Save and Apply the Changes. 9. Go to Firewall > Rules and create a new rule by clicking the + button to make a rule for the WAN interface.2nd - check that your router received an IPv4 address from Comcast. If it did not, make sure you have enabled dhcp client on the router. 3rd - check that your router has a pool of NAT addresses (192.168.0.0/24 for most people though 10.0.0.0/24 works as well) available and that dhcp server is enabled.I cannot find the settings on the router using the local web interface, using the Xfinity app, or the Xfinity website. I dont have time to explain why I need to do this as this is not a debate on why I should use IPv6 or how to get around the many issues I have because of it, I just simply would like to know how to disable IPv6 as a Xfi customer.On further inspection, I am actually losing IPv6 connectivity every hour (not every two hours). Rebooting the modem restores IPv6 connectivity for an hour and then the modem stops routing traffic again. So my theory about the problem being related to 2 hour WAN DHCP leases may be incorrect. (Renewing a lease should not break connectivity but ...The issue is that once ipv6 is turns on the modem will stop forwarding all traffic (IPv4 and IPv6). It will stay in this state until the modem is rebooted, however post reboot traffic will drop again after about 2 minutes. If I turn off IPv6, IPv4 will work exactly as you would expect. This problem started after buying a MB8611 and still ...Comcast Activates First Users With IPv6 Native Dual Stack Over DOCSIS. We are excited to announce that Comcast has successfully activated our first group of cable modem customers using IPv6 in a "Native Dual Stack" configuration. These customers can now access content and services natively over both IPv6 and IPv4, since …For IPv6, no custom configuration is required on the Business IP Gateway since the provisioning of the IPv6 prefix is managed by Comcast. You would need to subscribe to a block of IPV4 static IP addresses to get the IPV6 static IP's. PTR records can be requested by calling into our care teams through 1-800-391-3000, or you can always reach out ...On further inspection, I am actually losing IPv6 connectivity every hour (not every two hours). Rebooting the modem restores IPv6 connectivity for an hour and then the modem stops routing traffic again. So my theory about the problem being related to 2 hour WAN DHCP leases may be incorrect. (Renewing a lease should not break connectivity but ...Sep 24, 2019 · The Comcast IPv6 DNS servers will be prepended regardless of any other setting, static or dynamic. Additionally, all IPv6 DNS lookups are "intercepted" by Comcast and redirected to their IPv6 DNS servers. 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. Jan 27, 2020 · The network portion uses the higher order bits of the address while the host uses the lower order bits. The division point is called the netmask in IPv4 and the prefix in IPv6. For IPv6: When the NIC is started and IPv6 is enabled w/ SLAAC support, the NIC generates a unique 64 bit address to be used as the host portion of the IPv6 address. Download speed. This number is a measure of how quickly your device gets data from the Internet. It’s expressed in megabits per second — Mbps. Test your Internet upload and download speeds to see how Comcast Business Internet compares to the competition. Get a free quote today for speeds up to 1 Gig.May 28, 2023 · Check the Provide DNS configuration via radvd. Under Firewall-->Rules -->Lan. Add an IPv6 Lan Net entry to allow IPv6 traffic on your lan, just look at the IPv4 rule for a guide. Make sure you saved everything while doing this and reboot (again). When it comes back up, you should have IPv6 on the WAN interface. On said connection, Xfinity is advertising IPv6 ULA routes as evidenced in the output below (mac address filtered to protect the innocent. Note that ens9 is the interface on my router facing Xfinity): $ sudo tcpdump -i ens9 -v multicast and not broadcast. dropped privs to tcpdump. tcpdump: listening on ens9, link-type EN10MB (Ethernet), capture ...Provide IPv6 to your LAN including the clients behind it. For step 1 start with selecting the appropriate IPv6 mode, reconfigure the WAN interface and try to ping an IPv6 address or host from the firewall itself, e.g.: Test if ping over IPv6 to Internet is successful (also possible via Interfaces‣Diagnostics‣Ping ).Sep 13, 2020 ... It has options to enable DHCP for IPv6 or provide static info. DHCP for IPv6 is enabled and the router has an address, delegated prefix and ...Configuration mirrors IPv4 for EDI: a PTP link on the WAN side and a routed subnet for you to use as needed. Everything on the WAN side is static. Assign your designated PTP IPv6 address to your EDI interface, use the provided PTP gateway address as the upstream gateway, set the subnet size as provided, in our case /126 as expected.As you may know, Xfinity recently graded it's network speed to 2.5gbs. That change obsoleted my Motorola MB8600 cable modem, and altered my IPv6 subnet mask from a /64 to a subnet mask of /128, assigning a single external ip address. The MB8600 was quickly replaced with a 2.5gbs capable Motorola MB8611. I had a career in IT; senior … Welcome to the Xfinity community! Our community is your official source on Reddit for help with Xfinity services. If you have questions about your services, we're here to answer them. We can help with technical issues, general service questions, upgrades & downgrades, new accounts & transfers, disconnect requests, credit requests and more. Provide IPv6 to your LAN including the clients behind it. For step 1 start with selecting the appropriate IPv6 mode, reconfigure the WAN interface and try to ping an IPv6 address or host from the firewall itself, e.g.: Test if ping over IPv6 to Internet is successful (also possible via Interfaces‣Diagnostics‣Ping ).The Comcast equipment is a Cisco type-BWG model-DPC3939B Business IP Gateway. It's readouts show the IPv4 and IPv6 static delegations. I'm using VyOS as the routing software on my router/firewall (which is plugged in to one of the LAN ports on the BIP Gateway). It's an OSS fork of Vyatta, parallel to Brocade or Ubiquiti. Welcome to the Xfinity community! Our community is your official source on Reddit for he