[ 4321.409356][T20253] gre: GRE over IPv4 demultiplexor driver
[ 4323.547074][T20276] ip_gre: GRE over IPv4 tunneling driver
[ 4387.349336][T20847] ip6_gre: GRE over IPv6 tunneling driver
[ 4430.422182][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4436.311076][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4441.302089][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4446.998073][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!