[ 1553.082652][T23959] gre: GRE over IPv4 demultiplexer driver
[ 1553.563315][T23982] ip_gre: GRE over IPv4 tunneling driver
[ 1571.576612][T24555] ip6_gre: GRE over IPv6 tunneling driver
[ 1573.449009][   T52] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1577.897391][T24804] ping (24804) used greatest stack depth: 23336 bytes left
[ 1583.304890][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1585.289852][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1587.208848][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1589.385861][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1612.952352][T25942] ping (25942) used greatest stack depth: 23232 bytes left