[ 4684.964002][T23266] gre: GRE over IPv4 demultiplexor driver
[ 4687.188844][T23289] ip_gre: GRE over IPv4 tunneling driver
[ 4752.309941][T23862] ip6_gre: GRE over IPv6 tunneling driver
[ 4798.193499][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4804.529429][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4809.969422][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4816.242402][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!