Choosing not to sync Known network across devices

Hi,

in my office I have credentials to connect only 1 device to the complimentary wifi. I then choose to connect my Macbook (or iPad) to the wifi.

Unfortunately, iCloud seems to sync the information about known networks to my iPhone, and this results in the iPhone being connected to the wifi with no IP assigned, hence no internet connection, and me not noticing it until a few hours later.

Would it be possible to fix this behaviour?

Is it possible to choose not to sync known network settings across devices?

Thanks

Ale