[Gllug] routing via a second external IP
John Winters
john at sinodun.org.uk
Wed Aug 13 07:03:00 UTC 2008
Alistair Mann wrote:
> John Winters wrote:
> > Paul Cupis wrote:
>
> >>
> >> # ip route add x.x.x.x/x via y.y.y.y
> >
> > Remembering of course to tell your select customers to use the right
> > IP
> > address for the new ADSL line - otherwise only half the traffic
> > (outbound from you) will go down the new line, and if you have NAT
> > then
> > it won't work at all.
>
> NAT works fine with multiple routes, even multiple default routes: I
> support just such a box being used 'in anger'.
>
> I suspect you meant that NAT and multiple routes won't work with a mere
> "ip route add".
No, I meant what I said - that if your traffic is coming in down one
link and going out down another, and one of them is NATed then it won't
work.
John
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