[ 3235.355593][T29091] gre: GRE over IPv4 demultiplexor driver
[ 3236.555963][T29114] ip_gre: GRE over IPv4 tunneling driver
[ 3272.847299][T29685] ip6_gre: GRE over IPv6 tunneling driver
[ 3297.253180][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3301.093132][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3304.358130][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3308.197116][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3435.976361][T32172] ping (32172) used greatest stack depth: 23168 bytes left