Re: route based on source address and/or destination port

[Alexey Kuznetsov]

Hello!

> ipchains -A output -p tcp -d 0/0 6000:7000 -t 0x01 0x10
> ./ip route add default tos 0x10 via x.x.x.x

Only tos set by input chain is taken into account,
when selecting route. tos mangled by output chain can affect
only queuing.

If you want to route smartly packets, originated by your host,
you have only two choices:

1. Fiddle with IP_TOS in applications.
2. Move all this smartness to router.
   The last variant is the only reasonable, because host must have
   routing table consisting only of one default route.

Alexey Kuznetsov
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