[  957.179486][ T3558] gre: GRE over IPv4 demultiplexer driver
[  957.734687][ T3581] ip_gre: GRE over IPv4 tunneling driver
[  965.807121][ T3937] ping (3937) used greatest stack depth: 23888 bytes left
[  974.447521][ T4162] ip6_gre: GRE over IPv6 tunneling driver
[  979.232005][ T4361] ping (4361) used greatest stack depth: 23664 bytes left
[  982.520080][ T4505] ping (4505) used greatest stack depth: 22720 bytes left
[  985.470526][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  987.583485][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  989.503481][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  991.614503][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!