A multi-homed node can be connected to multiple networks that may
utilize different DNS namespaces. The node often receives DNS server
configuration information from all connected networks. Some of the
DNS servers may have information about namespaces other servers do
not have. When the multi-homed node needs to utilize DNS, it has to
choose which of the servers to contact to. This document describes a
policy based method for helping on selection of DNS server for both
forward and reverse DNS lookup procedures with help of DNS suffix and
IPv6 prefix information received via DHCPv6.
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