Hello. I did everything according from instructions : https://zerotier.atlassian.net/wiki/spaces/SD/pages/224395274/Route+between+ZeroTier+and+Physical+Networks
I had in end step this information: “sudo apt install iptables-persistent sudo bash -c iptables-save > /etc/iptables/rules.v4” permission denied
I have now, after reboot on my pi raspberry problem with forward, bacause table not save in last step.