I have some local domains, and I want them to be accessible over ipv6 only. I'm using unbound.
local-zone: "example.com" redirect
local-data: "example.com. 2562000 IN NS 2607:XXXX:XXXX:XXX::XXX"
local-zone: "test.example.com" redirect
local-data: "test.example.com. 2562000 IN NS 2607:XXXX:XXXX:XXX::XXX"
local-data: "test.example.com. 2562000 IN AAAA 2607:XXXX:XXXX:XXXX::XXX"
But I can't find for sure, if you are allowed to have IPV6 addresses as NS records, as pretty much every one I find in the internet uses domains...