Set a static ThunderBolt address?

With QTS Hero, it’s easy to set a static IP (ethernet) address. But each time I reboot the client (Mac), the ThunderBolt IP Address changes, and that doesn’t seem configurable on the QNap in Control Panel - Networking, nor on the Mac.
How can I configure it to not be dynamically supplied, so that rsync scripts work?

hi TechnoCat
Maybe you can try
login web admin page> open Network & Virtual Switch>Click Add > Advanced Mode
In the interface selection screen, check the Thunderbolt port you want to use (e.g., thunderbolt0 or thunderbolt1).

  1. Choose “Use static IP address”.
  2. Enter your desired IP address (e.g., 192.168.100.1) and subnet mask (e.g., 255.255.255.0).
  3. Complete the wizard and apply the configuration.
    Seems if this can help assign static ip on nas T