cannot ping/ssh/remote some other IPs in my network from some macOS machines

[pberto]

I have a zerotier network with several machines (Win/Linux/macOS), say 10 for the sake of this example. Each of them lists correctly and has an IP.

Just from SOME macOS machines I am unable to ping/ssh/remote SOME of the other devices. This mean I can ping/ssh/remote eg into 7 of these machines but not the remaining 3 despite they are all active and listed in the network with IP.

zerotier-cli peers tells me the links are direct.

I tried to connect under different wifi/lan/4G/5G network and it makes no difference.