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.Jul 30, 2021 · ipv6 dns servers and settings. I've used xfinity for 6 years and always had ipv6 connectivity. About 5 months ago I got a new router and used the same settings for ipv6 that my last router used. But I'm not getting ipv6 - all my wifi devices are running at 433mbps. In the past when ipv6 was working wifi devices all ran at 867mbps. Google WiFi can’t see ipv6 addresses or prefix. Some ipv6 addresses passthrough to devices but devices can talk to the world only using IPv4. Not sure if it’s google WiFi glitch or way Comcast now manages ipv6 assignment and google WiFi doesn’t support it. I had it for 2 years and remember until recently having no issues with ipv6.See full list on homenetworkguy.com 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....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.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 …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 …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".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.24 Messages. Saturday, March 6th, 2021 9:37 PM. Closed. How to setup IPv6 without Comcast DHCPv6 prefix delegation. With the troubles I've had with IPv6 with this week's …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 ...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 conditions and device capabilities. …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.... IPv6 configuration. If I go to Internet > IPv6 Setup, it's getting a proper address/prefix from my provider (XFINITY/Comcast). When I go to ...Apr 12, 2012 · In a somewhat controversial move, Comcast is giving each of its home networking users what’s called a /64 block of IPv6 addresses, which represents more than 18 quintillion IPv6 addresses or ... Greetings all, After racking my brain for the past few weeks as to WHY my speed dropped from 800-900 to 500-600. I even went out and got a new Modem (Arris S33). I found out that my AX-86U (on Merlin 388.1), had IPV6 enabled. I turned it off and it's working correctly. (Getting 1000-1200Mbps from spdMerlin at the router).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 …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 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. 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 close the window.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 ...Jan 25, 2020 · 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 ... 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.user_daw312. No, IPv6 is not functional until it is reset, the test just shows the issue. Just a guess, there is an issue getting a new IP address when the lease expires - some interaction issue between the netgear router and comcast. This issue has been reported on these forums, reddit, on netgear forums, DSL reports, and probably more, …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 ...Feb 5, 2014 · 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 ... How to Configure IPv6 in Your Home Network with ISP such as Comcast Xfinity. Dustin Casto. August 17, 2019. (Updated: May 16, 2022) Routers. OPNsense , IPv6. Photo by geralt from Pixabay. Fully Plug 'n Play KVM IP - Control any computer remotely, from BIOS to the desktop with the TinyPilot IP KVM. Starting at $399 · Learn more. Table of Contents.The number of internet-enabled devices is growing rapidly. A principios del 2011, la Internet Assigned Numbers Authority (IANA) agotó las direcciones IPv4 ...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. Dec 4, 2021 · 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. When you need help with your Comcast service, you want to get the best results from your customer assistance. The following tips will help you get the most out of your customer ser...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.I'm reaching out for some advice on setting up IPv6 with my Comcast Xfinity router. I've noticed that we're assigned a /56 IPv6 prefix in the Xfinity settings. However, Xfinity seems to restrict us to a /64 prefix for DHCPv6 or SLAAC. Our goal is to utilize our own DHCPv6 server and distribute the full /56 block into multiple /64 subnets.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 …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.To set up an IPv6 Internet connection on your NETGEAR router: Launch a web browser from a device that is connected to your router's network. Enter www.routerlogin.net. A login window displays. Enter your user name and password. The default user name is admin.A big milestone. Comcast has hit an important milestone: The media conglomerate told investors on a quarterly earnings call this morning that it now has more subscribers for intern...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 ...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 ...@user_c5b358 If you are using Xfinity equipment, you won't be able to disable IPv6. You can on some 3rd party routers/mesh networks -- look for the WAN connection on the router admin setup page, and it's easy on a firewall. Just don't configure IPv6 on the external interface. Depends on what you have to work with.Aug 2, 2020 · I am having issues setting up my static IPv6 Address from my Comcast Cable Modem. If I bypass the USG and connect directly to the Comcast Cable Modem, IPv6 works correctly. I also have my static IPv4 address working correctly on the USG. I reviewed the following Instructions: 24 Messages. Saturday, March 6th, 2021 9:37 PM. Closed. How to setup IPv6 without Comcast DHCPv6 prefix delegation. With the troubles I've had with IPv6 with this week's …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.Sep 18, 2022 ... ... 5:04. Go to channel · Comcast IPv4 Fix---How to Fix IPv4/IPv6 'No Internet Access' Error. SupremeLeader•39K views · 8:22. Go to channel&n... 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. Mar 16, 2024 · Xfinity allows us to do that on-demand using DHCPv6 from the gateway router via a process called prefix delegation. 2. If the interface toward the cable modem is ether1, we can say: /ipv6 dhcp-client. add interface=ether1 request=prefix \. pool-name=ipv6 use-peer-dns=no. The pool name is up to you. 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.Change Router priority to High. Save and Apply Settings. At this point, you should see IPv6 address show up for each interface configured on the Status > Dashboard. You may need to reboot the router and/or modem as well. Additionally, connected devices should receive IPv6 addresses. Comcast, IPv6, pfSense. ← desktop audio → random …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 ).Comcast (or rather the DOCIS spec allows a value to be configured on a modem) only allows 1 MAC address to get DHCP lease, if you connected something like a laptop to configure bridge mode or for testing purposes you need to reboot the modem to clear the stored MAC address.ipv6 address autoconfig default ipv6 enable ipv6 dhcp client pd comcast-prefix random-detect dscp-based no cdp enable. 4) Now issue the command: #sh ipv6 general-prefix. You should get back something like the following: IPv6 Prefix comcast-prefix, acquired via DHCP PD 2603:3004:273:F960::/59 Valid lifetime 265472, preferred lifetime 265472 #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 ...Mar 16, 2024 · Xfinity allows us to do that on-demand using DHCPv6 from the gateway router via a process called prefix delegation. 2. If the interface toward the cable modem is ether1, we can say: /ipv6 dhcp-client. add interface=ether1 request=prefix \. pool-name=ipv6 use-peer-dns=no. The pool name is up to you. Today, over 25% (and growing) of Comcast’s Xfinity Internet customers are actively provisioned with native dual stack broadband Internet service. Native IPv6 …Cable companies aren’t terribly popular with their customers, and the size of their monthly bills goes a long way toward explaining why. Cable companies aren’t terribly popular wit...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.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.Normally you just get both IPv4 and IPv6 addresses. It's possible to run an IPv4 only setup, but you'll need a router that supports disabling IPv6. I'm pretty sure that means buying your own equipment. Disable IPv6 is a common option on routers but I'm betting you can't do it on an XB8. 0.Enabling IPv6 on owned equipment. I have the Orbi 970 (BE 33000/BE 95) and looking to enable IPv6. What I'm not clear on, and netgear asked me to confirm with …I am having issues setting up my static IPv6 Address from my Comcast Cable Modem. If I bypass the USG and connect directly to the Comcast Cable Modem, IPv6 works correctly. I also have my static IPv4 address working correctly on the USG. I reviewed the following Instructions: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.Forget the 6in4 tunnel. Comcast Xfinity blocks the ability to setup a 6in4 tunnel through a tunnel broker service. Since you are using your own modem, reboot your DD-WRT router after setting up Prefix Delegation to see if it pulls an IPv6 address on the WAN port from Xfinity. You might have to also reboot or power cycle your cable modem.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.NOW WiFi Pass. Access to millions of hotspots. No commitments. Special offer — only $10 for each 30-day pass. Save on Xfinity Digital Cable TV, High Speed Internet and Home Phone Services. Enjoy entertainment your way with great deals on Xfinity by Comcast.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.However, now the connection is unstable. Every 10-15 minutes the connection drops for about thirty seconds to a minute, or even longer. Here is what "ping 75.75.75.75 -t" looks like when the connection drops: Reply from 75.75.75.75: bytes=32 time=13ms TTL=55. Reply from 75.75.75.75: bytes=32 time=12ms TTL=55. I'm reaching out for some advice on setting up IPv6 with my Comcast Xfinity router. I've noticed that we're assigned a /56 IPv6 prefix in the Xfinity settings. However, Xfinity seems to restrict us to a /64 prefix for DHCPv6 or SLAAC. Our goal is to utilize our own DHCPv6 server and distribute the full /56 block into multiple /64 subnets. Dec 14, 2023 · If you have to setup a dhcpv6 server inside, use a /64 prefix. Set an arbitrary range -- something like ::1000 to ::2000. I use ravd to provide DNS servers I specify, but depending on how yours works, you make have to enter some IPV6 DNS servers to pass out someplace else. Hope that's a start. ( edited) 0. NOW WiFi Pass. Access to millions of hotspots. No commitments. Special offer — only $10 for each 30-day pass. Save on Xfinity Digital Cable TV, High Speed Internet and Home Phone Services. Enjoy entertainment your way with great deals on Xfinity by Comcast.Xfinity Network upgrade / DHCPv6 change. A couple of months ago I received a notice that Xfinity was upgrading its network in my area with a middle of the night disruption. Next day, my IPv6 stopped working. I tracked it down to a change in the way DHCPv6 server worked. It seems the address of the DHCPv6 server moved from a …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 …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 mixWhen 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 …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 … 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. 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. 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.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. 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.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 …How to Configure IPv6 in Your Home Network with ISP such as Comcast Xfinity. Dustin Casto. August 17, 2019. (Updated: May 16, 2022) Routers. OPNsense , IPv6. Photo by geralt from Pixabay. Fully Plug 'n Play KVM IP - Control any computer remotely, from BIOS to the desktop with the TinyPilot IP KVM. Starting at $399 · Learn more. Table of Contents.To halt unauthorized IPv6 traffic in your network, you also need to halt unauthorized IPv6 tunnels hiding in IPv4 traffic. There are many forms of tunnels you might want to control including Teredo, ISATAP, 6to4, 6in4, 6over4. Even GRE 6in4 tunnels might be a concern. In fact, every IPv4 network should also control IPv4 traffic tunneling in ...
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. …. Erik jimenez villeda
Welcome to the Xfinity community! Our community is your official source on Reddit for help with Xfinity services. ... (Arris SB8200). I have a Google WiFi mesh system, that i activated IPv6 on, but it says it's not getting an ip from the modem. I have rebooted both the modem and the routers, and still nothing. I contacted Comcast support, and ...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?My setup assumes you get /64 prefix from your ISP (Comcast in my case) via DHCPv6. Also assumed is empty IPv6 configuration. First I like to disable default neighbor discovery interface. Blasting IPv6 router advertisements on all intefaces is not necessarily a good idea: /ipv6 nd set [ find default=yes ] disabled=yes. Next step is to …for some reason, every router I have ever setup does not have ipv6 enabled from the factory, so just might need to enable it. if your router has the options, try "Native" for connection type, and "Stateless" for the auto configuration setting. I configured my router to enable ipv6 but didn't work.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 …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 …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.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. For your LAN interface, assign it a /64 that falls under your allocated /56. If you have more than one LAN interface, repeat using distinct prefixes that fall under your /56.A big milestone. Comcast has hit an important milestone: The media conglomerate told investors on a quarterly earnings call this morning that it now has more subscribers for intern...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 times my inernet ...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...Aug 2, 2020 · Unfortunately IPv6 on Comcast Business is not truely static. They assign your IPv6 addresses utilizing prefix deligation (PD). In my experience the address range is tied to the modem so if your device is ever swapped you will get a new range unlike IPv4 which can be transfered from device to device since they use RIP for routing IPv4. Not sure ... 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...I figured I will share a trick that made my Comcast Busines IPv6 connection a bit more useful. I do have a Comcast Business connection and pay for a static /29 for IPv4. Note that Comcast does advertise, but not actually support static IPv6 addresses. So this is provided "as is" and "works for me". The IPv6 address assigned to the modem has ...Comcast's IPv6 actually works really well, a lot of providers do not implement it as nicely as they do. 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 computer\device on your network will have a globally routable IP address (which they currently don't). If you ...To sign in to Comcast email, visit the xfinity.comcast.net site and click the blue “Sign In” button on the left. Enter your sign in information, click the “Sign In” button again, a....