I had a problem by months and I couldn't fix it.
Several days checking logs, packet capture, etc.
My cenario: 2 - pfSense in HA with DHCP relay 2 - DHCP server with hot-stanby mode
Part of my users with problem to request DHCP IP during startup, every day.
So I finded this command:
powercfg /sleepstudy
Running this command in PC, I can see that PC was doing hybrid shutdown.
So I created a GPO to disable it.
Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Power' -Name HiberbootEnabled -Value 0
After this, prolem was solved.
Anyone already see this? I can't find anything about it.