avahi-dnsconfd

Avahi DNS configuration tool
Avahi is a fully LGPL framework for Multicast DNS Service Discovery.
It allows programs to publish and discover services and hosts
running on a local network with no specific configuration. For
example you can plug into a network and instantly find printers to
print to, files to look at and people to talk to.
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This tool listens on the network for announced DNS servers and passes
them to resolvconf so it can use them. This is very useful on autoconfigured
IPv6 networks.