igb interface not detecting link down

Marius Halden marius.h at lden.org
Tue Dec 17 08:34:08 UTC 2019

>On dt., des. 17 2019, Marius Halden wrote:
>> Hi,
>> We have som machines with Intel i350 NICs which after upgrading
>> from
>> 11.2-RELEASE to 12.1-RELEASE has started to act up. They will
>> detect
>> link and come up initially when brought up, but they will not
>> detect
>> link down events when the connection is lost, e.g. if we remove
>> the
>> network cable.
>> This is a big problem for us as they are used in a failover lagg
>> which
>> is currently not working due to this.
>> `ifconfig <if> down ; ifconfig <if> up` does not have any
>> effect. I
>> cannot see anything in dmesg or any other logs.
>> Removing the interfaces from lagg interface does not make any
>> changes to
>> this behaviour, nor did disabling `vlanhwtag` which I found a
>> bug report
>> for issues with when using these NICs.
>> Is this a known regression from 11.X? Any advise for how to
>> debug this
>> further?
>I'd recommend following this bug:
>And adding any information that can be useful.

Thank you, will do. I didn't find that for some reason.

Marius Halden

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