[ 4394.393176][T22397] gre: GRE over IPv4 demultiplexor driver
[ 4396.729294][T22420] ip_gre: GRE over IPv4 tunneling driver
[ 4461.417603][T23000] ip6_gre: GRE over IPv6 tunneling driver
[ 4483.691888][T23199] ping (23199) used greatest stack depth: 22400 bytes left
[ 4505.394373][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4511.474364][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4516.786355][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4522.994374][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!