Robyt3
Does anyone actually host a server with correctly set sv_hostname? A few servers incorrectly specify "localhost" or something else that does not exist or is only local. This may lead to weird interactions in the client UI, were you can't favourite a server in the server browser. Sometimes internet servers also seem to appear in the LAN tab, not sure if that is related to the server having a specific sv_hostname set.
If you set an incorrect address in a lot of places, it defaults to localhost