[  845.857230][T12556] gre: GRE over IPv4 demultiplexer driver
[  846.359643][T12579] ip_gre: GRE over IPv4 tunneling driver
[  862.515444][T13154] ip6_gre: GRE over IPv6 tunneling driver
[  867.053468][T13354] ping (13354) used greatest stack depth: 23760 bytes left
[  873.021610][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  875.070566][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  876.990569][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  879.037577][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  900.418999][T14536] ping (14536) used greatest stack depth: 23600 bytes left