Avoid using WLAN if possible, it has several technical limitations making it not really suitable as single interface of a hyper-visor like PVE.
At least the following disadvantages apply:
- Wi-Fi adapters can only be used as Linux bridge interface through workarounds, as most Access Points (APs) will reject frames that have a source address that didn’t authenticate with the AP.
- compared to wired Ethernet connections you will experience more latency spikes, reduced bandwidth and depending on distance and barriers between host and the AP even spotty connections