Are you disabling IPv6? Maybe you should stop — and here’s why

May 04, 2016 Constant Problems Dropping IPV6 with Comcast on R7 There are literally 7 sections of different configurations for IPv6. I have no reason to believe that Comcast (The USA's number 1 internet service provider with over 25 million broadband subscribers) would be offering something unusual in flavours of IPV6. Here is what Comcast shows when I run IPv6 tests while the router is working properly: Comcast Activates First Users With IPv6 Native Dual Stack

State of IPv6 Deployment 2018 | Internet Society

Data caps are not necessary. Plain and simple. My Comcast 1 gig internet as rock solid thru the entire lockdown. My family used over 3TB each month (March, April & May) for work, school and entertainment. My neighborhoods service never once suffered a slow down. Comcast ceased showing customers their data usage during this time.

I left comcast a while back, but previously, I had ipv6 working with them using an SB6121. I used a linksys E3000 running tomatoUSB (shibby). First things to check are on the modem diag page, verify you're getting an ipv6 address, then ensure your router 1) can handle ipv6 and 2) supports native ipv6 mode (this is how mine worked)

Does xfinity internet support IPv6? : Comcast_Xfinity Data caps are not necessary. Plain and simple. My Comcast 1 gig internet as rock solid thru the entire lockdown. My family used over 3TB each month (March, April & May) for work, school and entertainment. My neighborhoods service never once suffered a slow down. Comcast ceased showing customers their data usage during this time. Learn about IPv6 and your business | Comcast Business Find out whether your business network is ready for the web's new Internet Protocol.