@jplee This are the commands I used on a ER-X setup as WAN+2LAN2

sudo -i

curl -s https://install.zerotier.com | sudo bash

cd /var/lib

mv /var/lib/zerotier-one /config/scripts/

ln -s /config/scripts/zerotier-one

cp /opt/vyatta/share/perl5/Vyatta/Interface.pm /opt/vyatta/share/perl5/Vyatta/Interface.pm.backup

scp /Users/JohDoe/Downloads/zerotier-edgeos.tgz [email protected]:/home/ubnt
(from new terminal window)

tar -C / -xvzf /home/ubnt/zerotier-edgeos.tgz

connect zerotier (zerotieradress)

show interfaces zerotier

configure

set interfaces zerotier zt3jnycvh4 description ZerotierNetwork

commit ; save

exit

@jplee From ZT to Lan I got this working without NAT or without a route configuration.

I could ping the ZT devices from my Switch0 LAN.

What I wanted was to be able to acces the complete Switch0 LAN from anywhere in the world when I am connected with a PC or phone in the same ZT Network.

You don't need to set a NAT configuration if you set a route in the Zerotier web interface.

10.11.12.1/24 - (LAN)
192.168.1.1/24 via 10.11.12.1

The 10.11.12.1/24 is the Zerotier Network
The 192.168.1.1/24 is the Switch0 network for the ER-X