[ 4348.311339][T29268] gre: GRE over IPv4 demultiplexer driver
[ 4349.883835][T29291] ip_gre: GRE over IPv4 tunneling driver
[ 4370.213834][T29545] ping (29545) used greatest stack depth: 23328 bytes left
[ 4397.394109][T29864] ip6_gre: GRE over IPv6 tunneling driver
[ 4417.588432][T30113] ping (30113) used greatest stack depth: 22848 bytes left
[ 4430.006912][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4434.806828][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4438.966820][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4443.894813][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!