ssh X11 forwarding won't work

Question

I have been trying to get X11 port forwarding to work from my laptop. I can\'t figure out why it won\'t work.

I get this message when I try to run xterm:

Answer 1

I got the same issue on a Debian OpenVZ container and the problem seemed to come from my /etc/hosts file where "localhost" was affected to the LAN IP, not 127.0.0.1.

Before :

192.168.0.15  dagi dagi.domain.net localhost localhost.localdomain

After :

192.168.0.15  dagi dagi.domain.net
127.0.0.1     localhost localhost.localdomain

After that, both ssh -X and ssh -Y worked like a charm without even restarting sshd.