[ 1532.075522][T11833] gre: GRE over IPv4 demultiplexer driver
[ 1532.652529][T11856] ip_gre: GRE over IPv4 tunneling driver
[ 1551.653041][T12429] ip6_gre: GRE over IPv6 tunneling driver
[ 1560.988601][T12774] ping (12774) used greatest stack depth: 23320 bytes left
[ 1563.911867][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1565.959833][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1567.814874][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1570.118853][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!