[  326.248546][ T2862] gre: GRE over IPv4 demultiplexor driver
[  327.816970][ T2885] ip_gre: GRE over IPv4 tunneling driver
[  375.051829][ T3466] ip6_gre: GRE over IPv6 tunneling driver
[  394.844046][ T3715] ping (3715) used greatest stack depth: 23440 bytes left
[  407.106486][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  411.842406][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  415.873411][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  420.546426][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!