netdev - Re: Adding SNAT support to LVS/NAT

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Message-ID: <Pine.LNX.4.64.0809140809500.5635@wm7d.net>
Date:	Sun, 14 Sep 2008 08:14:18 -0700 (PDT)
From:	Joseph Mack NA3T <jmack@...d.net>
To:	Julius Volz <juliusv@...gle.com>
cc:	lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
	j.stubbs@...kthink.co.jp
Subject: Re: Adding SNAT support to LVS/NAT

On Sun, 14 Sep 2008, Julius Volz wrote:

> Actually, what if we modify or remove that function to 
> allow further processing in POSTROUTING? Could SNAT work 
> with IPVS then?

sounds OK by me. You should get an opinion from people who 
know the code better than I do.

> The comment above it says that the function specifically 
> wants to avoid further NAT by netfilter. But is this 
> always a problem?

I assume the function is there

o to speed up LVS (useful but not required for LVS-NAT)

o to push the layer 2 packet for LVS-DR out on the wire. 
This packet has the MAC address of the RIP, but 
dst_addr=VIP, so can't be sent through routing.

Joe

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