Date: Fri, 03 Dec 1999 13:59:57 +1100 From: Gregory Bond <gnb@itga.com.au> Cc: freebsd-ipfw@FreeBSD.ORG Subject: Re: NATD and IP Aliases Message-ID: <199912030259.NAA19013@lightning.itga.com.au> In-Reply-To: Your message of Wed, 24 Nov 1999 12:19:56 %2B1100.
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I wrote: >If we are running natd on our external ethernet interface, and that ether >interface has 2 IP addresses bound to it (on two different Class C nets), >which IP will natd use for the outgoing packet? > For packets originated on the server, the system is (I think!) clever enough > to > use as the local-address the IP that is on the same network as the first-hop > gateway for that packet. > > Is natd clever enough to do the same thing? Answer (from experiment): No. It will use the first IP on the named interface and brand all packets with that IP. But the output packet will go via the appropriate gateway. If the two class Cs were on different interfaces, then presumably I could make this work by running two NATDs on two divert ports and having two divert rules. I might investigate this for the meantime.... Greg. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message
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