[ 3191.848085][T23669] gre: GRE over IPv4 demultiplexer driver
[ 3193.426890][T23692] ip_gre: GRE over IPv4 tunneling driver
[ 3242.126380][T24264] ip6_gre: GRE over IPv6 tunneling driver
[ 3262.624587][T24515] ping (24515) used greatest stack depth: 23264 bytes left
[ 3275.271682][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3280.201576][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3284.359588][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3289.223623][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!