[ 4264.389782][T21601] gre: GRE over IPv4 demultiplexor driver
[ 4266.039485][T21624] ip_gre: GRE over IPv4 tunneling driver
[ 4295.473939][T21999] ip (21999) used greatest stack depth: 23800 bytes left
[ 4314.195357][T22196] ip6_gre: GRE over IPv6 tunneling driver
[ 4334.509256][T22446] ping (22446) used greatest stack depth: 23440 bytes left
[ 4347.013803][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4351.876705][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4356.036696][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4360.900689][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!