[  770.562994] gre: GRE over IPv4 demultiplexor driver
[  770.770561] ip_gre: GRE over IPv4 tunneling driver
[  775.812034] ip (8398) used greatest stack depth: 12056 bytes left
[  780.215104] ip6_gre: GRE over IPv6 tunneling driver
[  786.294491] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  787.702497] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  789.046501] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  790.582465] ip6_tunnel: tep0 xmit: Local address not yet configured!