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Date:	Fri, 08 Jun 2007 16:20:02 +1000
From:	Herbert Xu <>
To: (Baruch Even)
Subject: Re: Multicast and hardware checksum

Baruch Even <> wrote:
> I have a machine on which I have an applications that sends multicast 
> through eth interface with hardware tx checksum enabled. On the same 
> machine I have mrouted running that routes the multicast traffic to a 
> set of ppp interfaces. The packets that are received by the client have 
> their checksum fixed on some number which is incorrect. If I disable tx 
> checksum on the eth device the packets arrive with the proper checksum.

Where is the client? On the same machine or behind a PPP link?

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