[ 3345.546250][T31444] gre: GRE over IPv4 demultiplexor driver
[ 3346.684650][T31467] ip_gre: GRE over IPv4 tunneling driver
[ 3381.256450][T32049] ip6_gre: GRE over IPv6 tunneling driver
[ 3395.299008][T32299] ping (32299) used greatest stack depth: 23568 bytes left
[ 3400.693436][T26140] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3404.595307][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3408.307338][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3411.444298][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3415.091294][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!