I'm guessing you're in the US? Haven't had any problems with IPv6 on ISP-supplied routers in UK, NL, DE, CN, HK, VN, TH, SG over the last 10y or so, seems like

I'm guessing you're in the US? Haven't had any problems with IPv6 on ISP-supplied routers in UK, NL, DE, CN, HK, VN, TH, SG over the last 10y or so, seems like a solved problem for most of the world.