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Date:	Wed, 20 Aug 2014 09:29:07 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'Cong Wang' <>
CC:	Jamal Hadi Salim <>,
	Linux Netdev List <>
Subject: RE: Lost ping responses

From: Cong Wang
> On Tue, Aug 19, 2014 at 4:35 AM, David Laight <> wrote:
> > From: Jamal Hadi Salim
> >
> >> > Any ideas how to find out where the discards are happening?
> >> > It might just be somewhere that would affect other traffic flows.
> >>
> >> netstat -s
> >
> > Thanks - 'Ip: outgoing packets dropped' increments for every lost response.
> >
> > Next step is to work out what that means...
> >
> Try dropwatch, it should give you better hints.

That involves finding/compiling a version that will run on ubuntu 13.10 server.
And working out which extra ubuntu packages it needs to work.
On a system I've built the sources on (after fixing LDLIBS) I get the
error 'Unable to find NET_DM family' - whatever that means.
but that isn't the system dropping packets.


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