[  491.518766][ T1913] gre: GRE over IPv4 demultiplexor driver
[  493.798729][ T1936] ip_gre: GRE over IPv4 tunneling driver
[  497.565873][ T1979] ip (1979) used greatest stack depth: 23440 bytes left
[  557.406112][ T2515] ip6_gre: GRE over IPv6 tunneling driver
[  585.481563][ T2764] ping (2764) used greatest stack depth: 23360 bytes left
[  601.940358][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  607.956280][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  613.269303][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  619.540290][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!