The local ISP I use in my holiday home,
Teleservice Skåne, doesn't offer native
IPv6 to us lowly ADSL customers. However, they do operate a 6rd
gateway! This configuration in my OpenWRT's
all the difference:
config interface wan6 option proto '6rd' option peeraddr '18.104.22.168' option ip6prefix '2a02:83::' option ip6prefixlen 32
Ta-da! Thanks, Philip @ Teleservice!
Ask your local ISP if they can do the same!