From owner-freebsd-net@freebsd.org  Thu May 10 19:17:05 2018
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Date: Thu, 10 May 2018 21:17:03 +0200
From: Harry Schmalzbauer <freebsd@omnilan.de>
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Subject: if_em(4) carrier loss event not recognized with i217; while 82574
 does recognize
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 Hello,

if I pull the TP connection from my i217 Clarkville, HEAD still reports
media
1000Base-T status "active".

Doing the same with the other if_em(4) NIC in that box, a hartwell,
82574LM, the status correctly changes to "no carrier".

This is not iflib related, since it's reproducable with FreeBSD
11-stable (some months old).

Shall I file a PR?

-harry