[ 1467.371831][T18094] gre: GRE over IPv4 demultiplexer driver
[ 1467.814788][T18117] ip_gre: GRE over IPv4 tunneling driver
[ 1475.107512][T18468] ping (18468) used greatest stack depth: 22968 bytes left
[ 1483.194827][T18693] ip6_gre: GRE over IPv6 tunneling driver
[ 1493.201491][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1495.185454][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1496.977460][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1498.961465][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!