Does Service - Router Advertisements know which DHCPv6 server you are using?

[IsaacFL]

I am using KEA as my DHCPv6 server now, and was curious if the Router Advertisement Service is aware of that.

There is an option "DNS options" "Use the DNS configuration of the DHCPv6 server"

I have unchecked it as I'm using the router DNS, unbound, which I believe is automatic. But it could be more clear which DHCP Server it is pulling it from.