[  721.057511] gre: GRE over IPv4 demultiplexor driver
[  721.188089] ip_gre: GRE over IPv4 tunneling driver
[  722.735542] ip (8208) used greatest stack depth: 12032 bytes left
[  729.686142] ip6_gre: GRE over IPv6 tunneling driver
[  735.040578] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  736.448566] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  737.792565] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  739.200536] ip6_tunnel: tep0 xmit: Local address not yet configured!