Configuring your Ubiquiti access point to connect to a remote UniFi Controller (not on the same subnet) is easy to do using the DHCP option 43 – Vendor Specific Information. All we need is the IP address of the server converted to a HEX string: https://www.browserling.com/tools/ip-to-hex
- Go to Network -> Network Services -> DHCP Servers and open the one which will hand out information to the Ubiquiti device.
- Next, add a new Custom Object:
- Code: 43
- Type: BINARY
- Parameter: 0104<HEX IP Address> (Replaced 0x with: 0104)
- Safe and activate the config.