netdev - Re: nat bypass

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Message-ID: <20100630023718.GU2138@verge.net.au>
Date:	Wed, 30 Jun 2010 11:37:18 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	ratheesh k <ratheesh.ksz@...il.com>
Cc:	Netfilter mailing list <netfilter@...r.kernel.org>,
	netdev@...r.kernel.org
Subject: Re: nat bypass

On Mon, Jun 28, 2010 at 03:43:46PM +0530, ratheesh k wrote:
> Hi,
> 
>   A -------> R ------->S
> 
> I have a linux machine A is connected to Linux machine R . Machine R
> is having two network interfaces and acting as a router .
> It has a dhcp server running  . It will assign ip in 192.168.1.0/24
> subnet to all machine connected on lan side ( A is connected also in
> lan side ) . Wan side of R is connected to HTTP server S . There is
> also a DHCP server running on S to assign ip in 10.232.18.0/24 subnet
> .  Is there any way , in which NAT should be bypassed to get ip from
> DHCP server running  on S . My question is : How can A will get  an ip
> from 10.232.18.0/24 pool ip .?
> ebtables is an option ? How can we make it ?
> Is there any other optimal way ?

Let me try and understand this.

R is routing between 192.168.1.0/24 and 10.232.18.0/24.
As A is on the 192.168.1.0/24 side of R.
But to give A an 10.232.18.0/24 address (dynamically)?

Why?

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