[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: Sun, 12 Mar 2023 22:08:02 UTC

--- Comment #1 from Timothy Pearson <tpearson@raptorengineering.com> ---
Digging further, it appears that at some point in this process an invalid PCIe
transaction occurs, forcing the controller off the bus.  The subsequent hang
may be ppc64le specific, as x86 doesn't have an equivalent PCIe firewalling
mechanism, however the underlying bug is likely present on both platforms.

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