Recursive DNS server ICMPv6 router advertisement

You can configure a maximum of three recursive DNS server addresses and their respective lifetimes via static configuration at interface level for IPv6 hosts. Previously, rpd supported only link-local address information, prefix information, and the link MTU. The router advertisement-based DNS configuration is useful in networks where an IPv6 host's address is auto-configured through an IPv6 stateless address and where there is no DHCPv6 infrastructure available. To configure the recursive DNS server address, include the dns-server-address statement at the [edit protocols router-advertisement interface interface-name] hierarchy level.