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Date:	Tue, 23 Oct 2007 14:11:23 +0200
From:	Thomas Graf <>
To:	Dan Williams <>
Cc:	"Denis V. Lunev" <>,,
	"Denis V. Lunev" <>,
	"David S. Miller" <>,
	Alexey Kuznetsov <>
Subject: Re: Regression in current git - Network Manager fails (bisected)

* Dan Williams <> 2007-10-22 11:57
> On Mon, 2007-10-22 at 13:22 +0400, Denis V. Lunev wrote:
> > We have spent some time with the problem with Alexey and there are no 
> > guesses for now.
> > 
> > Is it possible to name exact version of Network Manager and all 
> > libraries related + provide us an output of strace with full buffers 
> > send/received from netlink. Something like
> >      strace -v -x -s 32768 <nm>
> NM uses netlink in two places; libnl (from Thomas Graf) and some custom
> code for listening for interface up/down events and wireless events.
> It looks like that code comes from libnl's lib/handlers.c where it
> thinks the received message is invalid.
> I'm pretty sure the code that checks carrier status of the device isn't
> libnl code; so maybe the error message (which should get fixed of
> course) isn't in the same path as the link detection.
> The link detection comes from src/nm-netlink-monitor.c, so maybe we
> should look at debugging there.

The patch introduced a change in semantics because it removed the
special ACK handling after a dump was started.

I will look into this.
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