Management Interface traffic vs App Interface Traffic

Hi all.  I am on Unraid 6.12.13.  I have two NICs on the server.  I am have been thinking of segregating the management traffic (the traffic that would be considered as used by managing the Unraid server and its UI and administering the server) and the application traffic (the traffic that would be anything that is not related management of the Unraid.  Simply application traffic such as VM and docker any other application related traffic).

I have assigned the static IPs to both NICs and they work pretty well so far.  However, I cannot figure out how to separate mgmt traffic and app traffic.  Here is one use case I am working on for the application traffic:

Plex running in its plex official docker (unraid > apps > plex official). 

Network settings:
eth0 - Management Interface - 192.168.4.5

eth1 - App Interface - 192.168.4.6

NICs are not bonded or bridged
 

• Plex Docker Network type: Host
  When the container starts up, it take the ip address of what I have setup and call mgmt interface (192.168.4.5) and then create ports through which different services are available as typical.
   
• Plex Docker Network type: Custom: eth1  -- App Interface
  Selecting this option allows me to provide a custom ip address (192.168.4.7) that is available (not in use) in the subnet 192.168.4.0/24.  And upon giving that available IP address, the container startsup. 
  
  If I use the "192.168.4.7" then of course the container, of course everything is working fine as far as unraid, plex and docker is concerned. Docker is running and I get following Network setup:
  192.168.4.7:1900/UDP192.168.4.7:1900
  192.168.4.7:32400/TCP192.168.4.7:32400
  192.168.4.7:32410/UDP192.168.4.7:32410
  192.168.4.7:32412/UDP192.168.4.7:32412
  192.168.4.7:32413/UDP192.168.4.7:32413
  192.168.4.7:32414/UDP192.168.4.7:32414
  192.168.4.7:32469/TCP192.168.4.7:32469
  192.168.4.7:8324/TCP192.168.4.7:8324
  
  But, that is not quite what I want.  I'd like this to be something like this:
  192.168.4.6:1900/UDP192.168.4.6:1900
  192.168.4.6:32400/TCP192.168.4.6:32400
  192.168.4.6:32410/UDP192.168.4.6:32410
  192.168.4.6:32412/UDP192.168.4.6:32412
  192.168.4.6:32413/UDP192.168.4.6:32413
  192.168.4.6:32414/UDP192.168.4.6:32414
  192.168.4.6:32469/TCP192.168.4.6:32469
  192.168.4.6:8324/TCP192.168.4.6:8324
  
  Caveat, of course, is that I cannot use the "192.168.4.6" for the custom IP because it will cause ip duplication issue and container won't come up.
   

I read in one of the threads that I can use "Network Extra" feature to do this, but I am not sure what specifically I can do there which would then require me to change another setting in the plex docker.

Thanks in advance!

Edited October 1, 20241 yr by Ravi Parmar