[ 3190.544676][T23846] gre: GRE over IPv4 demultiplexer driver
[ 3192.145916][T23869] ip_gre: GRE over IPv4 tunneling driver
[ 3239.962145][T24441] ip6_gre: GRE over IPv6 tunneling driver
[ 3260.131419][T24690] ping (24690) used greatest stack depth: 23648 bytes left
[ 3272.641560][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3277.504464][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3281.665469][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3286.721470][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3363.979861][T25942] ping (25942) used greatest stack depth: 23328 bytes left