[ 4099.076275][T28657] gre: GRE over IPv4 demultiplexer driver
[ 4100.701464][T28680] ip_gre: GRE over IPv4 tunneling driver
[ 4149.557806][T29254] ip6_gre: GRE over IPv6 tunneling driver
[ 4170.322182][T29503] ping (29503) used greatest stack depth: 23440 bytes left
[ 4183.070584][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4188.062484][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4192.222491][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4197.150522][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4269.026357][T30640] ping (30640) used greatest stack depth: 23024 bytes left