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Date:      Mon, 07 Feb 2022 16:25:15 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 261746] hn(4): Communication stops when enabling SR-IOV secondary mlx5en(4) interface (640FLR-SFP28) on Windows Server 2022
Message-ID:  <bug-261746-7501-mrPLrdFB9c@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-261746-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-261746-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D261746

Wei Hu <weh@microsoft.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|maintainer-feedback?(weh@mi |maintainer-feedback?(hps@Fr
                   |crosoft.com)                |eeBSD.org)
                 CC|                            |hps@FreeBSD.org,
                   |                            |hselasky@FreeBSD.org

--- Comment #6 from Wei Hu <weh@microsoft.com> ---
I was able to reproduce on a VM in Azure as well. Following commit broke the
Cx-4 VF driver on Hyper-V:

commit e059c120b4223fd5ec3af9def21c0519f439fe57
Author: Hans Petter Selasky <hselasky@FreeBSD.org>
Date:   Tue Feb 1 16:20:12 2022 +0100

    mlx5en: Create and destroy all flow tables and rules when the network
interface attaches and detaches.


Add HPS for comment and further investigation.

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