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Date:      Wed, 14 Mar 2001 16:16:18 -0600 (CST)
From:      Nick Rogness <nick@rogness.net>
To:        mark_wright@datacard.com
Cc:        questions@FreeBSD.ORG
Subject:   Re: Possible to have more than one IP assigned to a NIC?   
Message-ID:  <Pine.BSF.4.21.0103141607030.371-100000@cody.jharris.com>
In-Reply-To: <OF39665203.185ADE2D-ON86256A0F.0071997F@datacard.com>

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On Wed, 14 Mar 2001 mark_wright@datacard.com wrote:

> I have a FreeBSD box running as a mail, web and nat server.  It's
> connected to our T-1 connection using a Sangoma T-1 card.  The problem
> I'm having is that our T-1 provider (qwest) doesn't want us to use the
> IP assigned to our T-1 connection as our server's IP.  They expect us
> to have a separate router and server.  They're our backup DNS server,
> and they won't mirror our in-addr.arpa zone for the IP that they
> expect we will use only for a router.  So far, this only seems to
> cause problems with the FreeBSD mailing lists, but I'm sure other
> reverse-dns-related problems will crop up.

	Yes, a lot of things rely on reverse DNS.


> 
> Is there some way to use NAT to fix this?  Or is there some way to
> assign more than 1 ip address to a network interface, so it can answer
> on both?

	Are you BGP peering with them or ?  What is the other range of
	IP's you are using...are they private?  Do you have more than 1
	IP?  How is your routing and IP address scheme setup?

	Yes, you can setup nat to work with this setup...but why?  unless
	you have only 1 IP.  If so, request a small subnet like a /30 or
	/29 from Qwest.  Believe me, you may need it.  Have them staticly
	route it to your BSD machine.

	Hell...I'll do secondary for ya if you ask nicely ;-)  Problem is,
	who's IP's are those?  Qwest's?  Someone has to delegate them to
	you in DNS for you to do primary on them.

Nick Rogness <nick@rogness.net>
- Keep on routing in a Free World...  
  "FreeBSD: The Power to Serve!"


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