In Switzerland it is a level of insanity above this. Major ISPs are now promising 10Gbit and 25Gbit fibre to the home, but only one ISP natively supports IPv6 (init7, not the country's major provider Swisscom).
This is utterly bonkers. While the ethernet cables they give out can likely do 10Gbit (but definitely not 25Gbit) very few people have 10Gbit-capable ethernet or wifi chipsets and there is no way they will actually be able to routinely transmit data at this speed.
Swisscom do 6rd and don't offer static IPv6 either presumably because of how 6rd works. So it is a pain to configure anything except using their own box.
This is utterly bonkers. While the ethernet cables they give out can likely do 10Gbit (but definitely not 25Gbit) very few people have 10Gbit-capable ethernet or wifi chipsets and there is no way they will actually be able to routinely transmit data at this speed.
Swisscom do 6rd and don't offer static IPv6 either presumably because of how 6rd works. So it is a pain to configure anything except using their own box.