1. Install Aplikasi Zerotier :
   opkg update
   opkg install zerotier
2. Setting Network Zerotier
   uci delete zerotier.sample_config
   uci set zerotier.openwrt_network=zerotier
   uci add_list zerotier.openwrt_network.join=’af78bf9436f1c4e2′
   uci set zerotier.openwrt_network.enabled=’1′
   uci commit zerotier
3. reboot

https://github.com/mwarning/zerotier-openwrt/wiki