From: Patrick McHardy <kaber@trash.net>
To: Marc Lehmann <schmorp@schmorp.de>
Cc: Andrew Morton <akpm@osdl.org>,
netdev@vger.kernel.org,
Netfilter Development Mailinglist
<netfilter-devel@lists.netfilter.org>
Subject: Re: Fw: masquerading failure for at least icmp and tcp+sack on amd64
Date: Fri, 09 Sep 2005 13:41:34 +0200 [thread overview]
Message-ID: <432174EE.80306@trash.net> (raw)
In-Reply-To: <20050907215213.GB8222@schmorp.de>
Marc Lehmann wrote:
> It's also a 64-bit-only problem. To verify, I tried this:
>
> ethtool -K eth1 rx off tx off sg off
>
> Where eth1 is the interface where pppoe runs over.
>
> ethtool -k eth1 then displayed:
>
> rx-checksumming: off
> tx-checksumming: off
> scatter-gather: off
> tcp segmentation offload: off
>
> And ICMP, TCP etc. starts working again.
>
> Thanks for the analysis and the hint, I guess that verifies that its hw
> checksumming. (Weird that hw checksumming on the underlying device somehow
> changes the ppp packets, but nevertheless).
I tried reproducing the problem without any luck. Its odd that its
happening on both eth and ppp devices, if it was just ppp I would
suspect some missing checksum update/invalidation in the ppp driver.
What network driver are you using? Please also send a list of loaded
modules and iptables rules. Thanks.
next prev parent reply other threads:[~2005-09-09 11:41 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050907052057.09714a4c.akpm@osdl.org>
2005-09-07 12:39 ` Fw: masquerading failure for at least icmp and tcp+sack on amd64 Patrick McHardy
2005-09-07 20:59 ` Marc Lehmann
2005-09-07 21:34 ` Patrick McHardy
2005-09-07 21:52 ` Marc Lehmann
2005-09-09 11:41 ` Patrick McHardy [this message]
2005-09-11 13:19 ` Marc Lehmann
2005-09-11 14:10 ` Patrick McHardy
2005-09-13 18:09 ` Stephen Hemminger
2005-09-13 20:59 ` David S. Miller
2005-09-14 1:13 ` Patrick McHardy
2005-09-14 3:41 ` David S. Miller
2005-09-14 1:10 ` Patrick McHardy
2005-09-14 19:09 ` Fw: " Marc Lehmann
2005-09-07 21:34 ` Marc Lehmann
2005-09-07 21:42 ` Patrick McHardy
2005-09-07 21:54 ` Marc Lehmann
2005-09-07 22:08 ` Patrick McHardy
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