This post is to raise the awareness only, it was already solved by updating the kernel from 5.14 to 5.15.
I was doing a fresh install using the omv6 ISO from the official website.
I found that the NIC (intel i225v) cannot be recognized during installation nor after installation. The system reports “no network hardware detected” when I do omv-firstaid
I have tried other versions of linux and OS (ubuntu desktop 20.04.3 LTS, Debian 11.2, windows10) non of them can detect the NIC except windows after manually install the driver from intel.
The problem is solved after I update the kernel from 5.14 to 5.15 as stated at the top.