Hi, Following up a bug report I received at http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=799 it looks like the current version iproute2's ss utility always returns an empty result set whenever specifying the -u flag. The problem has been bisected to 9db7bf15e22b6a1b8bc09c4a1e29571cbca55c94 and is also affecting version 3.19.0, but most notably 4.0.0+. I'm not quite sure that's the correct commit, but it does definitely look related. Even ss -xu, which previously returned a list of UNIX and UDP sockets now returns nothing on my systems. Any help with that matter is greatly appreciated. Mihai