Solaris SSH weird behaviour

Sun likes IPv6. They like it so badly that they strive to use it in all cases.

Solaris 9 and 10 SSH daemon is bounded to IPv6, which leads to a problem when trying to forward X. Editing the config file /etc/ssh/sshd_conf and assigning the SSH daemon to IPv4 address (bind to address 0.0.0.0) is not enough. You need to make sure that the sshd process is started with the “-4” flag. In Solaris 10, it means editing /lib/svc/method/sshd and appending “-4” to the sshd start command.

I wonder what will happen after an upgrade or a patch…