[ 4298.173063][T20531] gre: GRE over IPv4 demultiplexor driver
[ 4300.208407][T20554] ip_gre: GRE over IPv4 tunneling driver
[ 4361.775503][T21130] ip6_gre: GRE over IPv6 tunneling driver
[ 4404.371389][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4410.196248][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4415.187269][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4421.716246][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!