[  637.337978] gre: GRE over IPv4 demultiplexer driver
[  637.342557] ip6_gre: GRE over IPv6 tunneling driver
[  637.357079] ip6_tunnel: g1 xmit: Local address not yet configured!
[  637.367380] ip6_tunnel: g1 xmit: Local address not yet configured!
[  637.949852] ip6_tunnel: g2 xmit: Local address not yet configured!
[  637.960132] ip6_tunnel: g2 xmit: Local address not yet configured!