[  536.840717] gre: GRE over IPv4 demultiplexer driver
[  536.844985] ip6_gre: GRE over IPv6 tunneling driver
[  536.848449] ip6_tunnel: g1 xmit: Local address not yet configured!
[  536.851186] ip6_tunnel: g1 xmit: Local address not yet configured!
[  536.974963] tc (14452) used greatest stack depth: 11768 bytes left
[  537.013885] ip6_tunnel: g2 xmit: Local address not yet configured!
[  537.016683] ip6_tunnel: g2 xmit: Local address not yet configured!