SRV DNS Records für den Mumble-Server

https://en.wikipedia.org/wiki/SRV_record

_mumble._tcp.natenom.com 3600 IN SRV 5 64738 mumble.natenom.com.

https://github.com/mumble-voip/mumble/pull/1306/files#diff-be81680c373c3e89517b3abd14a4e175R306

https://github.com/mumble-voip/mumble/issues/1242, https://github.com/mumble-voip/mumble/pull/3127, https://github.com/mumble-voip/mumble/pull/1306, https://github.com/main--/mumble/commit/e1bdd6564bb0445c535d3c711e5142d9bafa13d8