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Date:      14 May 2002 09:33:43 +1000
From:      Andrew Reilly <areilly@bigpond.net.au>
To:        kudzu@tenebras.com
Cc:        "Karl M. Joch" <k.joch@kmjeuro.com>, stable@freebsd.org
Subject:   Re: 4.5 and mpd "no buffer space available on high load" ??
Message-ID:  <1021332824.8946.26.camel@gurney.reilly.home>
In-Reply-To: <3CE04966.1060706@tenebras.com>
References:  <3CDFEA8A.4070809@kmjeuro.com> <1021330624.8946.23.camel@gurney.reilly.home>  <3CE04966.1060706@tenebras.com>

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On Tue, 2002-05-14 at 09:16, Michael Sierchio wrote:
> Andrew Reilly wrote:
> 
> > I ran a script using jot to send ping packets across the link, with
> > sizes varying from 1300 to 2300 bytes, while also watching the link with
> > tcpdump.
> > 
> > Only one ping failed (it didn't even get out), with the following error
> > message:
> > ping: sendto: Message too long
> > 
> > I also saw a few "ip reassembly time exceeded" messages in tcpdump, but
> > I'm not sure whether they were correlated.
> > 
> > Most of my problems seem to have gone away when I added "add allow all
> > from any to any frag" to my firewall script.  Not sure how it ever
> > worked at all without that, though.
> 
> Mind posting the IP addrs? I'd like to send you a few frags. ;-)
> 
> Seriously,  that's a workaround that wouldn't be acceptable here.

I did wonder about the security implications of that, but don't know
enough IP to be sure.  The fact that that line is in /etc/rc.firewall,
and has been since 1999 or so, made me think that it wouldn't be a
problem.

-- 
Andrew


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