Mar 12 15:42:50 localhost kernel: IPv6 over IPv4 tunneling driver
Mar 12 15:42:51 localhost su(pam_unix)[2423]: session opened for user pgsql by (uid=0)
Mar 12 15:42:51 localhost su(pam_unix)[2423]: session closed for user pgsql
Mar 12 15:48:22 localhost sshd(pam_unix)[2627]: session opened for user root by root(uid=0)