[ 4339.270297][T29193] gre: GRE over IPv4 demultiplexer driver
[ 4340.886057][T29216] ip_gre: GRE over IPv4 tunneling driver
[ 4389.434508][T29787] ip6_gre: GRE over IPv6 tunneling driver
[ 4410.550846][T30036] ping (30036) used greatest stack depth: 23440 bytes left
[ 4423.480386][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4428.664324][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4433.080297][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4438.136340][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!