tree 559c8a018dc964ac7efb578fa617c823bc58b240
parent 2bdcc8eec93e6c0e497567adfe7d7f125b2ade83
author Oliver Smith <osmith@sysmocom.de> 1574243795 +0100
committer Neels Hofmeyr <neels@hofmeyr.de> 1576509713 +0100

add mDNS lookup method to libosmo-mslookup

Add the first actually useful lookup method to the mslookup library: multicast
DNS.

The server side is added in a subsequent commit, when the mslookup server is
implemented for the osmo-hlr program.

Use custom DNS encoding instead of libc-ares (which we use in OsmoSGSN
already), because libc-ares is only a DNS client implementation and we will
need both client and server.

Related: OS#4237
Patch-by: osmith, nhofmeyr
Change-Id: I03a0ffa1d4dc1b24ac78a5ad0975bca90a49c728