[ 1632.071312][T14764] gre: GRE over IPv4 demultiplexer driver
[ 1632.520162][T14787] ip_gre: GRE over IPv4 tunneling driver
[ 1637.926380][T15040] ping (15040) used greatest stack depth: 23200 bytes left
[ 1648.108248][T15359] ip6_gre: GRE over IPv6 tunneling driver
[ 1658.423665][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1660.406636][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1662.263633][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1664.246638][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!