[ 3915.336182][T19883] gre: GRE over IPv4 demultiplexor driver
[ 3917.403478][T19906] ip_gre: GRE over IPv4 tunneling driver
[ 3977.437260][T20477] ip6_gre: GRE over IPv6 tunneling driver
[ 4003.816852][T20737] ping (20737) used greatest stack depth: 23632 bytes left
[ 4019.247754][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4025.199685][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4030.383673][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4036.399674][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!