Unable to enable and configure eth2 on Unified Manager virtual appliance

Although 3 for 3.) eth2 is entered when enabling network interfaces, the maintenance console doesn't recognize it

    Network Configuration Menu
  --------------------------
    1 ) Display IP Address Settings
    2 ) Change IP Address Settings
    3 ) Display Domain Name Search Settings
    4 ) Change Domain Name Search Settings
    5 ) Display Static Routes
    6 ) Change Static Routes
    7 ) Disable Network Interface
    8 ) Enable Network Interface
    9 ) Commit Changes
    10 ) Ping a Host
    11 ) Restore to Default Settings

    b ) Back
    x ) Exit

  Enter your choice: 8

  Select interface:
  -------------------------
     1.) eth0
     2.) eth1
     3.) eth2

  Enter your choice (1-3): 3
  Enter your choice (1-3):