My IPV6 prefix delegation seems to have broken again

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Done!  Thanks for the instructions.

This is the same issue discussed in the previous thread, which I just ran into again myself a few days ago.

https://forums.businesshelp.comcast.com/conversations/ipv6/prefix-delegation-disabled/690fa973a2c50219bf21c6e6?commentId=69b8616d58321463f4f99350

This was originally caused by a defective series of firmware updates they pushed to many modems last year, and then they decided to roll it back.

Then apparently sometime in the past week, they started to roll these broken updates out again.

As such, once more, IPv6 is now broken for me too.