[  750.168829] gre: GRE over IPv4 demultiplexor driver
[  750.331767] ip_gre: GRE over IPv4 tunneling driver
[  760.197182] ip6_gre: GRE over IPv6 tunneling driver
[  766.905442] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  768.377438] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  769.785442] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  770.408764] ip (8180) used greatest stack depth: 12144 bytes left
[  771.257406] ip6_tunnel: tep0 xmit: Local address not yet configured!