[ 1645.106323][T11792] gre: GRE over IPv4 demultiplexer driver
[ 1645.619596][T11815] ip_gre: GRE over IPv4 tunneling driver
[ 1661.623374][T12387] ip6_gre: GRE over IPv6 tunneling driver
[ 1666.261812][  T393] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1669.270741][T12730] ping (12730) used greatest stack depth: 22464 bytes left
[ 1672.173734][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1674.158723][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1676.077715][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1678.125730][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!