[ 4254.671663][T20442] gre: GRE over IPv4 demultiplexor driver
[ 4256.751790][T20465] ip_gre: GRE over IPv4 tunneling driver
[ 4317.922342][T21038] ip6_gre: GRE over IPv6 tunneling driver
[ 4360.090916][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4365.913871][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4370.841855][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4376.794849][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!