[ 1254.029361][T19168] gre: GRE over IPv4 demultiplexer driver
[ 1254.562149][T19191] ip_gre: GRE over IPv4 tunneling driver
[ 1262.281158][T19544] ping (19544) used greatest stack depth: 23552 bytes left
[ 1270.911527][T19769] ip6_gre: GRE over IPv6 tunneling driver
[ 1278.702081][T20112] ping (20112) used greatest stack depth: 23208 bytes left
[ 1281.622989][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1283.798917][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1285.718913][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1287.894912][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!