Bug 241765

Summary:	em(4) - does not preserve link status across suspend/resume
Product:	Base System	Reporter:	dirkx
Component:	kern	Assignee:	freebsd-net (Nobody) <net>
Status:	New ---
Severity:	Affects Some People	CC:	dirkx
Priority:	---	Keywords:	IntelNetworking, regression
Version:	12.1-RELEASE
Hardware:	Any
OS:	Any

Description dirkx 2019-11-06 19:52:54 UTC

With an upgrade to 12.1 (from an early 11) -- the em(4) gigabit wired ethernet drive (on PCI) does not seem to preserve the link status across suspend/resume cycles on various Intel and Dell laptops.

To reproduce/test: 

- default 12.1 minimal install.
- connect no ethernet cable.
- boot (em0 will be up by default)
- 'sudo ifconfig em0 down'
- suspend by closing lid or 'zzz'.
- resume 5 mins later,
- observe that em0 is back up.