[  674.331829] gre: GRE over IPv4 demultiplexor driver
[  674.504366] ip_gre: GRE over IPv4 tunneling driver
[  676.494686] ip (7338) used greatest stack depth: 12032 bytes left
[  683.425440] ip6_gre: GRE over IPv6 tunneling driver
[  689.144358] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  690.552378] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  691.896380] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  693.304348] ip6_tunnel: tep0 xmit: Local address not yet configured!