[ 4044.761634][T23709] gre: GRE over IPv4 demultiplexor driver
[ 4046.824203][T23733] ip_gre: GRE over IPv4 tunneling driver
[ 4106.819296][T24314] ip6_gre: GRE over IPv6 tunneling driver
[ 4137.690988][T24608] ping (24608) used greatest stack depth: 22688 bytes left
[ 4148.879052][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4154.638995][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4159.569180][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4165.456162][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!