[ 1437.975807][T18783] gre: GRE over IPv4 demultiplexer driver
[ 1438.457104][T18806] ip_gre: GRE over IPv4 tunneling driver
[ 1445.876195][T19153] ping (19153) used greatest stack depth: 23280 bytes left
[ 1454.014753][T19378] ip6_gre: GRE over IPv6 tunneling driver
[ 1464.294703][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1466.279667][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1468.134662][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1470.118671][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!