netdev - Re: Multicast and hardware checksum

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Message-ID: <20070608110621.GA23842@gondor.apana.org.au>
Date:	Fri, 8 Jun 2007 21:06:21 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Baruch Even <baruch@...en.org>
Cc:	netdev@...r.kernel.org
Subject: Re: Multicast and hardware checksum

On Fri, Jun 08, 2007 at 02:02:27PM +0300, Baruch Even wrote:
> 
> As far as IGMP and multicast handling everything works, the packets are 
> even forwarded over the ppp links but they arrive to the client with a 
> bad checksum. I don't have the trace in front of me but I believe it was 
> the UDP checksum that failed.

What kind of a ppp device is this?

If you run a tcpdump either side of the ppp link do you see the same
UDP checksum value?

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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