[  324.719564][ T2862] gre: GRE over IPv4 demultiplexor driver
[  326.317386][ T2885] ip_gre: GRE over IPv4 tunneling driver
[  374.843725][ T3463] ip6_gre: GRE over IPv6 tunneling driver
[  391.884446][ T3662] ping (3662) used greatest stack depth: 23280 bytes left
[  408.775623][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  413.703566][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  417.864564][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  422.856569][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!