Warning that the Comcast renumbering is likely affecting ALL customers in North America.
My IPv6 service in Portland OR died on Monday. I filed a total of 4 trouble tickets with Comcast's support throughout the week, each time the ticket was closed, claiming that everything worked and that it must be my equipment.
I finally called in this afternoon, mad as a hornet - and surprise surprise surprise it suddenly started working when
I had the tech on the phone. Not from anything HE did, though.
What had happened near as I can tell, is that Comcast renumbered Portland OR from 2601:1c2:1:: to 2601:1c2:400::
Comcast also allocated many subnets from the 2601:1c2:400:; subnet to various locations in the Portland metro
A trace to my subnet in 2601:1c2:1:: made from subnetonline.com at around 2:30pm PST terminated in Comcast's
routers in Portland.
The same trace made at 4:30pm, 2 hours later is now terminating in Seattle, WA. And my cable modem which had had the same IP address for the last year or two - is now showing that it's got a new subnet address.
I don't mind the renumber and I'm well aware that problems can happen. I have done these things before myself. But, you don't leave your support people just dangling like that.
Whoever was in charge of the renumber at Comcast should have FILED A GENERAL OUTAGE FOR IPv6 AND KEPT IT ACTIVE UNTIL THE RENUMBER WAS COMPLETED.