Does Mikrotik ROS support IPv6 DNS requests?
Is there a way to specify the IPv6 DNS servers? RFC5006?
Yes, it is possible to specify IPv6 DNS servers in /ip dns servers list
But does it advertise those?
When I said requests I meant can it act as a DNS cache on IPv6.
Advertise where? If you mean stateless address configuration, then yes if advertise-dns is enabled.
But note that client should also be capable to receive DNS advertisements.
Thanks that is exactly what I needed. Because DNS settings are under /ip dns, I was thinking that they were only IPv4 settings. Glad I was wrong.