Tried ZT for last week or so.
All in all it’s a nice package.
I was able to connect a mix of Linux and Windows system and also make my LAN IPs be allowed as well, using this https://zerotier.atlassian.net/wiki/spaces/SD/pages/224395274/Route+between+ZeroTier+and+Physical+Networks
(the part when rules should be made persistent never worked !
sudo apt install iptables-persistent
sudo bash -c iptables-save > /etc/iptables/rules.v4)
Also I was not able to resolve my LAN hosts names. Not sure, but it seems like DNS/resolver part is not fully implemented.
Compare to TailScale, ZT still nees some polishing and simplicity improved.
Thanks for this app!