[ 3821.575704][T21106] gre: GRE over IPv4 demultiplexor driver
[ 3823.174736][T21129] ip_gre: GRE over IPv4 tunneling driver
[ 3869.867333][T21701] ip6_gre: GRE over IPv6 tunneling driver
[ 3889.840063][T21950] ping (21950) used greatest stack depth: 22416 bytes left
[ 3902.185449][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3906.921338][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3911.018322][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3915.753324][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!