Bug 241765

Summary: em(4) - does not preserve link status across suspend/resume
Product: Base System Reporter: dirkx
Component: kernAssignee: freebsd-net mailing list <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.