[ 4246.237303][T29309] gre: GRE over IPv4 demultiplexer driver
[ 4247.895337][T29332] ip_gre: GRE over IPv4 tunneling driver
[ 4300.677065][T29910] ip6_gre: GRE over IPv6 tunneling driver
[ 4321.327952][T30159] ping (30159) used greatest stack depth: 22928 bytes left
[ 4333.915596][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4338.780470][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4343.067509][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4348.059468][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!