Date: Tue, 23 Jul 2002 12:01:04 -0700 From: Michael Sierchio <kudzu@tenebras.com> To: Netmetrica corp <netmetrica@yahoo.com> Cc: freebsd-ipfw@freebsd.org Subject: Re: IPFW Problem with Aliases on single Interface Message-ID: <3D3DA7F0.30607@tenebras.com> References: <20020723185403.24782.qmail@web13102.mail.yahoo.com>
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Netmetrica corp wrote: > I'm running BSD4.5 with one ethernet interface. that > interface has multiple IP aliases. I would like to > give each IP address a seperate ingress and egress > rule. or in other words I want different subnets to > be treated separately if those subnets are aliases > on the same physical interface. > However, the IPFW takes a shortcut and it seems to > just use the the single outgoing interface instead of > the multiple IP address that are assigned to that > interface. Is there a reason that this feature is not > supported other than speed? It's not ipfw, but IP that does this. This is the case on every platform, in every implementation I know. All outbound traffic will go out the primary interface on the same net, even if they are separate physical interfaces. There is a way to do what you intend with a combination of ipfw and natd, and it gets fairly hairy. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message
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