On Wed, Jun 5, 2013 at 5:19 AM, <me at tdiehl.org> wrote: > On Tue, 4 Jun 2013, Les Mikesell wrote: > >> On Tue, Jun 4, 2013 at 12:44 PM, Adam Wead <amsterdamos at gmail.com> wrote: >>> I have to use -X in conjunction with -Y, so ssh -XY remote_host >> >> No difference; >> ssh -Y user at centos_5_host 'echo $DISPLAY' >> returns >> localhost:11.0 >> ssh -XY user at centos_6_host 'echo $DISPLAY' >> returns nothing. >> >> >> /etc/ssh/sshd_config is the default, with: >> X11Forwarding yes >> >> I remember having a similar problem when the xauth program was missing >> on a box but this one has it installed. > > Do you by chance have ipv6 disabled? If so try adding the following to > /etc/ssh/sshd_config and restart sshd: > > AddressFamily inet > Bingo - Thank you! This particular box had some performance issues with OpenNMS and I had disabled ipv6 among other things while trying to tune it. Seems odd that everything else still worked in ssh without that change, though. -- Les Mikesell at gmail.com