[Bug 270163] Intel 82571EB quad port adapter causing ifconfig response delays when only one interface plugged in at boot

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 13 Mar 2023 05:05:02 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270163

--- Comment #9 from Timothy Pearson <tpearson@raptorengineering.com> ---
(In reply to Timothy Pearson from comment #8)

Note that when the device is firewalled, every access returns 0xff, so the
reference to a driver lock is probably just the relevant bit being returned as
1 as part of a 0xff response from the PCIe controller.

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