[Bug 236724] igb(4): Interfaces fail to switch active to inactive state

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236724

Marius Strobl <marius at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|Open                        |Closed

--- Comment #34 from Marius Strobl <marius at FreeBSD.org> ---
(In reply to Vinícius Zavam from comment #32)

The fix for this PR, i. e. link state change detection for interfaces in the up
state, didn't make it into 12.1 as RC3 was cancelled, unfortunately. Disabling
the use of MSI-X as described in comment 32 is a viable workaround, though.

Comment 20 describes an orthogonal bug consisting in link status being reported
for interfaces in the down state, while the expected behavior for an interface
in this state is that no link status is reported and that - unless WOL is
enabled - its PHY(s) is/are shut down.

I'm closing this PR again as the regression it's about has been fixed and I
won't file an EN request for the fix.

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