[ 4066.341515][T20712] gre: GRE over IPv4 demultiplexer driver
[ 4067.960942][T20735] ip_gre: GRE over IPv4 tunneling driver
[ 4116.202583][T21308] ip6_gre: GRE over IPv6 tunneling driver
[ 4136.468576][T21557] ping (21557) used greatest stack depth: 23264 bytes left
[ 4148.977494][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4153.841434][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4158.065440][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4163.057440][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!