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Date:      14 Oct 1999 13:47:20 -0000
From:      Sergey <serge69@nym.alias.net>
To:        "Antuan Avdioukhine" <antuan@eltex.ru>, <freebsd-hackers@FreeBSD.ORG>
Cc:        <freebsd-questions@FreeBSD.ORG>
Subject:   Re: policy routing and freebsd
Message-ID:  <19991014134720.2433.qmail@nym.alias.net>
References:  <XFMail.991014162429.antuan@eltex.ru>

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> People, does anybody made policy routing under freebsd?
> I have to substitute different aliased IP's source address when packet
departs
> from the same interface but with another destinations rather then default.

It's relative simple if your source addresses are on the different IP
networks.
But you should set aliased address on your router too.

In other case, I guess that two natd daemons and firewall controled
diverting would help you.

> There is similar feature in linux (each alias address related with an kind
of
> "subinterface" which makes possible point to it in routing tables).
>
You can do similar thing here too.
I presume that router has 2 IP: 192.168.1.1 and 172.17.1.1.

# ifconfig ed0 inet 172.16.1.2
# ifconfig ed0 alias 192.168.1.2
# route add my.specific.destination 192.168.1.1

With best regards, Sergey.







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