[ 4464.646403][T27768] gre: GRE over IPv4 demultiplexer driver
[ 4466.308976][T27791] ip_gre: GRE over IPv4 tunneling driver
[ 4517.246742][T28365] ip6_gre: GRE over IPv6 tunneling driver
[ 4538.802583][T28614] ping (28614) used greatest stack depth: 23440 bytes left
[ 4552.027290][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4557.083222][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4561.371253][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4566.492205][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4638.585347][T29745] ping (29745) used greatest stack depth: 22464 bytes left