[Babel-users] RTT stability inside a GRE tunnel

Michael Richardson mcr at sandelman.ca
Tue Jul 2 18:31:51 UTC 2013


Baptiste Jonglez <baptiste.jonglez at ens-lyon.fr> wrote:
    >> 2) I would guess that the NAT has been setup with your host as the
    >> "DMZ" or "bastion" host, and all unknown packets are being forwarded
    >> to that host.

    > The hosts are not in any kind of DMZ.

    > Modern NAT are intelligent enough to forward this type of tunnels
    > correctly (the same goes for IP-in-IP or SIT tunnels).

Seriously... ?!?

I guess I can imagine that they might do this when only one such tunnel
exists and the tunnel is intiated from behind the NAT, but how can they demux
multiple of such tunnel, or figure out where to send packets when the host
behind did not send first?

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        | network architect  [
]     mcr at sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [




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