[  537.511273] gre: GRE over IPv4 demultiplexer driver
[  537.514607] ip6_gre: GRE over IPv6 tunneling driver
[  537.521699] ip6_tunnel: g1 xmit: Local address not yet configured!
[  537.525580] ip6_tunnel: g1 xmit: Local address not yet configured!
[  537.742761] ip6_tunnel: g2 xmit: Local address not yet configured!
[  537.746682] ip6_tunnel: g2 xmit: Local address not yet configured!