There may be some difficulties when porting mDNSResponder to Haiku, because the cross platform support is abandoned and some gcc incompatible codes was added to the sources. I need to fix the broken codes during the porting procedure. mDNSResponder will run like other Haiku components. A server runs in the background and clients that want to use the ZeroConf services can communicate with the server by a library.
This is a companion discussion topic for the original entry at https://www.haiku-os.org/blog/majie/2009-04-21_implementing_zeroconf_support_haiku_mdnsresponder/