[  377.470145][ T3290] gre: GRE over IPv4 demultiplexer driver
[  379.078806][ T3314] ip_gre: GRE over IPv4 tunneling driver
[  426.462667][ T3887] ip6_gre: GRE over IPv6 tunneling driver
[  442.668761][ T4087] ping (4087) used greatest stack depth: 23536 bytes left
[  454.241341][ T4231] ping (4231) used greatest stack depth: 23440 bytes left
[  459.337700][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  464.202656][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  468.425630][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  473.225658][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!