Agree - first it is really not the best idea to use /22 subnet. But if I use /22 I would really prefer to use my DHCP server for that@Shap
He is using something like a /22 subnet instead of a /24 net...
To my knowledge there are no "consumer" device based dhcp servers who can do that. Windows Superscope might be an answer.... but each scope will have an unique gateway
He didnt say what exacly his network setup is, but for me it sounds like a real mess which somehow work,... but i dont think out of the box.
I am using Unifi UDM - it does support using /22 subnets, but you are right - many routers may not