[ 3140.961023][T20392] gre: GRE over IPv4 demultiplexor driver
[ 3142.201507][T20415] ip_gre: GRE over IPv4 tunneling driver
[ 3181.324466][T20996] ip6_gre: GRE over IPv6 tunneling driver
[ 3193.289743][T21195] ping (21195) used greatest stack depth: 22448 bytes left
[ 3205.671554][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3209.448466][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3212.712465][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3216.488466][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!