[ 4712.670462][T24671] gre: GRE over IPv4 demultiplexor driver
[ 4714.898860][T24694] ip_gre: GRE over IPv4 tunneling driver
[ 4780.541075][T25268] ip6_gre: GRE over IPv6 tunneling driver
[ 4820.633489][T25613] ping (25613) used greatest stack depth: 23328 bytes left
[ 4826.943783][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4833.471682][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4839.039687][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4845.439688][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!