[ 4648.415205][T24589] gre: GRE over IPv4 demultiplexor driver
[ 4650.514582][T24612] ip_gre: GRE over IPv4 tunneling driver
[ 4672.654743][T24816] ping (24816) used greatest stack depth: 23144 bytes left
[ 4714.418998][T25200] ip6_gre: GRE over IPv6 tunneling driver
[ 4759.456618][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4765.727580][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4770.975537][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4777.248539][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!