Lost my IPv6 /56 this evening
Sometime around 6pm Pacific time this evening, I noticed some odd connectivity issues to certain sites. The problem appears to be that I lost my IPv6 /56 PD, as my OpenBSD router running wide-dhcpv6 dhcp6c is now only receiving a /64.
My IPv6 dhcp6c configuration hasn't changed for several years (haven't needed to change it, IPv6 has run great for 3 years at this site with the only hiccups being a couple of prefix changes from time to time). I did upgrade my modem to an SB6190 on Thursday night and also upgraded to Deluxe 250 service at the same time, but once the tech on the phone reprogrammed the new modem, everything was working great until now, including IPv6. (Neither my IPv4 DHCP assignment nor my IPv6 /56 prefix changed after the new modem came online.)
I've restarted the modem and have restarted dhcp6c on the router several times, but I'm still receiving a /64 from Comcast.
Can someone from Comcast help me get to the bottom of this? This has completely broken IPv6 connectivity at my site.