[  671.313194] gre: GRE over IPv4 demultiplexor driver
[  671.466654] ip_gre: GRE over IPv4 tunneling driver
[  671.795428] ip (9505) used greatest stack depth: 12128 bytes left
[  680.070995] ip6_gre: GRE over IPv6 tunneling driver
[  685.499481] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  686.907487] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  688.251485] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  689.595451] ip6_tunnel: tep0 xmit: Local address not yet configured!