[ 1503.689587][ T6740] gre: GRE over IPv4 demultiplexer driver
[ 1503.722943][ T6740] ip6_gre: GRE over IPv6 tunneling driver
[ 1503.925302][   T64] ip6_tunnel: er6 xmit: Local address not yet configured!
[ 1504.242244][   T64] ip6_tunnel: gt6 xmit: Local address not yet configured!