[OLSR-users] LQ, HNA and NAT
Thu Feb 10 01:10:45 CET 2005
The solution to that problem was - for us - to build a OpenVPN tunnel
to some central nice single point of failure
(which actually fails regularly ;-))) router. It accepts route for the
whole net and nats the net only once.
On Feb 9, 2005, at 3:43 PM, Stefan Sayer wrote:
> I have one other question related to LQ routing: if LQ routing is also
> used for an internet-gateway HNA, mostly NAT is used. Now iirc for tcp
> a NAT usually creates a soft-state for the connection with the first
> SYN coming from inside (the NATed network). Now if the HNA route
> happens to change during a connection because the link quality
> changes, and another HNA with another NAT is used, all further
> outgoing packets may not get through to destination as there is no
> connection entry in the other NAT. Is that correct or am I missing
> something here?
> If that is true, it would maybe make sense to change the HNA routes
> very slowly in order to not break too much connections.
> In practice here in Berlins olsr-net I think this has not been tested
> because the version of the fff that most people use here still does
> calculate HNA on hop count.
> ...but I might be completely wrong here as well.
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