[ 4188.242442][T29231] gre: GRE over IPv4 demultiplexer driver
[ 4189.875586][T29254] ip_gre: GRE over IPv4 tunneling driver
[ 4238.491990][T29828] ip6_gre: GRE over IPv6 tunneling driver
[ 4272.019488][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4276.947429][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4281.172434][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4286.036427][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4364.225028][T31307] ping (31307) used greatest stack depth: 23536 bytes left