[  400.274896] ip (4112) used greatest stack depth: 12152 bytes left
[  400.401771] gre: GRE over IPv4 demultiplexer driver
[  400.405484] ip6_gre: GRE over IPv6 tunneling driver
[  400.409164] ip6_tunnel: g1 xmit: Local address not yet configured!
[  400.413523] ip6_tunnel: g1 xmit: Local address not yet configured!
[  400.577631] ip6_tunnel: g2 xmit: Local address not yet configured!
[  400.580597] ip6_tunnel: g2 xmit: Local address not yet configured!