[  458.943281][ T2858] gre: GRE over IPv4 demultiplexor driver
[  461.157265][ T2881] ip_gre: GRE over IPv4 tunneling driver
[  527.896749][ T3455] ip6_gre: GRE over IPv6 tunneling driver
[  535.853552][ T3516] ping (3516) used greatest stack depth: 23064 bytes left
[  574.129893][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  580.338817][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  585.521797][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  591.793833][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!