[ 3889.107682][T20273] gre: GRE over IPv4 demultiplexor driver
[ 3891.140423][T20296] ip_gre: GRE over IPv4 tunneling driver
[ 3953.713582][T20867] ip6_gre: GRE over IPv6 tunneling driver
[ 3998.584139][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4004.790829][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4009.910848][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4015.926890][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4229.180475][T23346] ping (23346) used greatest stack depth: 22928 bytes left
[ 4244.711377][T23490] ping (23490) used greatest stack depth: 22656 bytes left