"Network uplink redundancy lost alert" is not cleared when link state goes up

Products

• VMware vSphere ESXi

Issue/Introduction

• vmnic netowrk links are going up -> down -> up in a very short time. 

i.e.,

(less than 1 second)

vobd.log:

####-##-##T05:19:43.267Z In(14) vobd[2098146]: [netCorrelator] 426365171us: [vob.net.vmnic.linkstate.up] vmnic vmnic8 linkstate up
####-##-##T05:19:44.303Z In(14) vobd[2098146]: [netCorrelator] 427400898us: [vob.net.vmnic.linkstate.down] vmnic vmnic8 linkstate down
####-##-##T05:19:44.827Z In(14) vobd[2098146]: [netCorrelator] 427925252us: [vob.net.vmnic.linkstate.up] vmnic vmnic8 linkstate up

• Network uplink redundancy lost alert is not getting cleared on the vCenter Server once the network is up

Environment

ESXi 8.x

Cause

When a vmnic status restores from **down** and experiences a quick status flapping sequence (**up → down → up**), the last **up** event is deduplicated when trying to enqueue two consecutive **up** events.

 
This results in an **unclear down alarm**.

Resolution

This will be resolved in an upcoming patch release