mdns-repeater is a Multicast DNS repeater for Linux. Multicast DNS uses the 224.0.0.51 address, which is "administratively scoped" and does not leave the subnet.
This program re-broadcast mDNS packets from one interface to other interfaces. It was written primarily to be run on my Linksys WRT54G which runs dd-wrt, since my wireless network is on a different subnet from my wired network and I would like my zeroconf devices to work properly across the two subnets.
Since the mDNS protocol sends the AA records in the packet itself, the repeater does not need to forge the source address. Instead, the source address is of the interface that repeats the packet.
- Original source: https://bitbucket.org/geekman/mdns-repeater
This version has been updated to support UCI configuration and provide an OpenWRT init script.
The UCI network interface option:
config interface 'lan'
...
option repeat 1
enables repeating of mDNS on an interface.