[ 3940.590399][T19774] gre: GRE over IPv4 demultiplexor driver
[ 3942.622641][T19797] ip_gre: GRE over IPv4 tunneling driver
[ 4004.436712][T20370] ip6_gre: GRE over IPv6 tunneling driver
[ 4047.024322][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4053.040248][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4058.352233][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4064.432371][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!