Based on tips I got from the Reddit ipv6 forum, I tried a combination of disabling and re-enabling ipv6 in Windows network properties and the router and also restarting the router, and somehow that...

My Archer C1200 v3.0 router stopped working with IPv6 yesterday. I cannot get it to obtain a public IPv6 address. If I connect my computer directly to the modem without the router, I get perfect IPv6...