[ 4303.590907][T18961] gre: GRE over IPv4 demultiplexer driver
[ 4305.490391][T18984] ip_gre: GRE over IPv4 tunneling driver
[ 4359.223722][T19556] ip6_gre: GRE over IPv6 tunneling driver
[ 4377.381614][T19755] ping (19755) used greatest stack depth: 23648 bytes left
[ 4395.600734][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4400.912635][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4405.584673][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4411.088668][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!