[  351.686319][ T3392] gre: GRE over IPv4 demultiplexer driver
[  351.975730][ T3406] ip (3406) used greatest stack depth: 23824 bytes left
[  352.173584][ T3415] ip_gre: GRE over IPv4 tunneling driver
[  367.956651][ T3987] ip6_gre: GRE over IPv6 tunneling driver
[  372.449231][ T4186] ping (4186) used greatest stack depth: 23664 bytes left
[  378.531654][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  380.515622][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  382.372311][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  384.420623][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!