After setting "PermitTunnel = yes" in /etc/ssh/sshd_config, sshd does not start anymore: Bad configuration option: PermitTunnel
CentOS 5.5 64 Bit, openssh-server version 4.3p2, release 41.el5_5.1
Works on another server with same configuration.
Actually sshd_config's options are set w/o '='.
$ grep PermitTunnel /etc/ssh/sshd_config
#PermitTunnel no