[ 3925.706800][T20199] gre: GRE over IPv4 demultiplexor driver
[ 3927.889991][T20223] ip_gre: GRE over IPv4 tunneling driver
[ 3965.633558][T20571] ping (20571) used greatest stack depth: 23216 bytes left
[ 3991.451334][T20797] ip6_gre: GRE over IPv6 tunneling driver
[ 4019.685730][T21053] ping (21053) used greatest stack depth: 23088 bytes left
[ 4036.392841][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4042.535754][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4047.720770][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4053.928797][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!