[ 4685.524330][T24671] gre: GRE over IPv4 demultiplexor driver
[ 4687.791691][T24695] ip_gre: GRE over IPv4 tunneling driver
[ 4720.812923][T24991] ping (24991) used greatest stack depth: 22864 bytes left
[ 4752.234302][T25267] ip6_gre: GRE over IPv6 tunneling driver
[ 4797.492447][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4803.764366][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4809.077355][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4815.476364][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4923.661390][T26744] ping (26744) used greatest stack depth: 22032 bytes left