[ 3917.774314][T20098] gre: GRE over IPv4 demultiplexor driver
[ 3919.889554][T20121] ip_gre: GRE over IPv4 tunneling driver
[ 3981.001603][T20693] ip6_gre: GRE over IPv6 tunneling driver
[ 4007.379875][T20942] ping (20942) used greatest stack depth: 23632 bytes left
[ 4022.918630][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4028.742499][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4033.670503][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4039.621517][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4280.125614][T23400] ping (23400) used greatest stack depth: 23216 bytes left