[ 4038.992088][T24625] gre: GRE over IPv4 demultiplexor driver
[ 4041.038339][T24648] ip_gre: GRE over IPv4 tunneling driver
[ 4101.943068][T25223] ip6_gre: GRE over IPv6 tunneling driver
[ 4128.172486][T25472] ping (25472) used greatest stack depth: 23360 bytes left
[ 4143.858628][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4149.874547][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4154.802537][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4160.626532][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!