[ 4014.491127][T24600] gre: GRE over IPv4 demultiplexor driver
[ 4016.556280][T24624] ip_gre: GRE over IPv4 tunneling driver
[ 4079.116697][T25198] ip6_gre: GRE over IPv6 tunneling driver
[ 4106.573971][T25447] ping (25447) used greatest stack depth: 23360 bytes left
[ 4122.244934][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4128.260838][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4133.382820][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4139.269833][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!