[ 3944.455401][T19948] gre: GRE over IPv4 demultiplexor driver
[ 3946.538259][T19971] ip_gre: GRE over IPv4 tunneling driver
[ 3953.830281][T20035] ping (20035) used greatest stack depth: 23720 bytes left
[ 3973.934874][T20223] ping (20223) used greatest stack depth: 23520 bytes left
[ 4008.844807][T20542] ip6_gre: GRE over IPv6 tunneling driver
[ 4045.801382][T20887] ping (20887) used greatest stack depth: 23360 bytes left
[ 4051.701022][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4057.780893][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4062.901874][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4068.852892][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!