[ 3990.301114][T19880] gre: GRE over IPv4 demultiplexor driver
[ 3992.456644][T19903] ip_gre: GRE over IPv4 tunneling driver
[ 4055.924391][T20486] ip6_gre: GRE over IPv6 tunneling driver
[ 4063.175089][T20547] ping (20547) used greatest stack depth: 23040 bytes left
[ 4099.639825][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4105.846741][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4110.966725][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4116.982714][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4221.082575][T21962] ping (21962) used greatest stack depth: 22416 bytes left