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Date:      Sun, 5 Aug 2001 12:21:20 -0500
From:      Josh Paetzel <jpaetzel@hutchtel.net>
To:        "Douglas G. Allen" <dallen@roe35.lth2.k12.il.us>, "FreeBSD Stable Listserv" <freebsd-stable@FreeBSD.ORG>
Subject:   Re: arp doesn't like two NIC's in same subnet on same machine?
Message-ID:  <01080512212003.00337@mark9.vladsempire.net>
In-Reply-To: <200108051203370733.0093DA8F@mail.roe35.lth2.k12.il.us>
References:  <200108051203370733.0093DA8F@mail.roe35.lth2.k12.il.us>

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On Sunday 05 August 2001 12:03, Douglas G. Allen wrote:
> I have a machine running 4.3-RELEASE, with softupdates enabled.  I have two
> Intel 100 Pro NIC's in the machine, an Adaptec controller card, and an 18G
> Ultra160 drive in it (running at 80, if it makes any difference).  I have
> the default route to the router set to always go out through fxp0.  When
> both fxp0 and fxp1 are enabled, I get complaints from arp about inquiries
> going out from fxp0 having answers received on fxp1.  Everything else
> 'seems' to be ok.  The box is running as a web server with each NIC
> referenced for different sites in different DNS A records.
>
> Is there an easy way to get rid of the arp message?  Do I need to make fxp0
> a gateway for fxp1?  Do I need to install routed or gated on this box?  I
> would really like to fix this without having to install routed or gated.
>
> Another thing that may be related.  When I enabled firewall rules on the
> box (ipfw, rc.firewall), nothing was reachable outside my own LAN.  I'm
> going to risk looking silly, but it would seem to me that if I need to make
> fxp0 a gateway for fxp1, then the firewall rules need to reference only
> fxp0 (since presumably all traffic would route through it).  I'm
> firewalling on the machine to give some redundancy, as the LAN is already
> firewalled with a dedicated firewall.
>
> Thanks in advance.
>
> 						Doug
>

Some more info on your network topology would be nice, but if you are using 
one NIC to connect to your local LAN, and the other to go to your gateway, 
you need to be running natd.

Josh

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