So yesterday I had some internet issues, had to reset my config, did an upgrade from 19.07 to 19.07.2 while I was at it. Everything was working fine yesterday, tested ipv6 and everything.
This morning my pihole was showing the telltale signs of having no ipv6 address, and sure enough I tested and there was none. Before it was usually just me misconfiguring DHCP/DNS, the router still would get an ipv6 address, but this time it hasn't. The wan6 interface, no matter how I set up the settings, shows Error: Network device is not present. ipv4 works just fine. Tested the modem, hooking it straight to my laptop yields a ipv6 and ipv4 address just fine.
The only thing that usually gives me headaches is that I have DHCP and DNS handled by my pihole. But I didn't change any settings on the pihole, and I'm fairly sure I got everything set up right on the router too, but I guess I could be wrong. What can I do/check? Thanks