[  897.521753][ T4145] gre: GRE over IPv4 demultiplexer driver
[  897.967568][ T4168] ip_gre: GRE over IPv4 tunneling driver
[  913.682579][ T4740] ip6_gre: GRE over IPv6 tunneling driver
[  919.161335][ T4989] ping (4989) used greatest stack depth: 23784 bytes left
[  923.976625][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  925.960593][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  927.816600][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  929.863602][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!