Hi, I am trying to do this: # dynamic list, updated through a bash script: define $nics = { "nic1", "nic5", ... } # ... chain foo { type filter hook ingress devices = $nics priority -500 # ... } The problems I am facing: 1. It seems the perfect solution I was hoping for is not possible: devices = "nic*" 2. If there is only one device (e.g. "nic7"), the syntax requires: device "nic7" # not 'devices' and no '=' Trying something like devices = "nic7" results in a segmentation fault. 3. Adding/removing a separate chain for each nic dynamically seems to me less efficient, i.e. I am trying to avoid it if possible. What is the right way to do this?