Socat
From Attie's Wiki
Route a Unix socket over TCP
Server (next to the listening Unix socket)
socat TCP-LISTEN:27015,reuseaddr,fork UNIX-CLIENT:/tmp/ns
socat TCP-LISTEN:27015,bind=127.0.0.1,reuseaddr,fork,su=nobody,range=127.0.0.0/8 UNIX-CLIENT:/tmp/ns
Client (to create a listening Unix socket)
socat UNIX-LISTEN:/tmp/ns,fork TCP-CONNECT:myserver:27015