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Date:      Tue, 24 Sep 2019 17:22:04 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 240658] iflib: if_igb(4) and some if_em(4) devices don't recognize/report carrier loss.
Message-ID:  <bug-240658-7501-KTdX8fXjpb@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-240658-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-240658-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240658

Harald Schmalzbauer <bugzilla.freebsd@omnilan.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|Closed                      |In Progress
         Resolution|DUPLICATE                   |---

--- Comment #4 from Harald Schmalzbauer <bugzilla.freebsd@omnilan.de> ---
Initially, https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239240 descr=
ibes a
different issue and I'd like to keep that separate, although John Delano ad=
ded
comment #3, where he mentions the same link state issue. But the proposed f=
ix
indicates this is an independent issue!

The proposed phabriactor patch in
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239240#c13
(https://reviews.freebsd.org/D21769) doens't fix the problem.

There's progress though: After once marking the interface down and up again,
the link state correctly changes from there on.  But right after loading the
kernel module, link state still doesn't change when physical connection was
lost (repeatedly won't change, unless you manually down/up).
Tested with 12.1-beta1, D21769+D21712 and i210, i350, 82576 (all hw.mac.type
igb ) and 82574L (em) - consistently the same behaviour.

Thanks,

-Harry

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