[ 4291.113238][T20128] gre: GRE over IPv4 demultiplexor driver
[ 4293.142090][T20152] ip_gre: GRE over IPv4 tunneling driver
[ 4354.119211][T20726] ip6_gre: GRE over IPv6 tunneling driver
[ 4395.314451][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4401.075361][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4406.130362][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4411.827362][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!