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The original was posted on /r/ubiquiti by /u/dark_time on 2023-08-28 08:02:23+00:00.

Basic setup: Linux on-prem unifi controller, Unifi Pro switches, Unifi USG-XG-8 gateway.

Have 2 VLANS and a default lan:

  • Default= 10.0.0.1/24,
  • VLAN50 =10.0.10.1/24
  • VLAN23 = 192.168.3.1/24

Need to allow printer company to collect stats/communicate from a printing device on VLAN23 IP: 192.168.3.47.

Set up a port forward as normal:

  • From: EXT-IP,
  • Port: 4202,
  • Forward IP: 192.168.3.47,
  • Forward Port 631,

This does not seem to work. However if i move the printer onto the default subnet and give it an IP of 10.0.0.26 for example, and update the port forward it works fine.

Both get their DHCP from the XG, no third party gateways etc…

What am i missing!!?