[Gllug] routing via a second external IP

Alistair Mann gllug at lgeezer.net
Wed Aug 13 10:35:49 UTC 2008


John Winters wrote:
 > 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.

Ah -- we had different definitions of 'it' in mind.

Cheers,
-- 
William Jefferson Clinton
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