Setting Grayed Out in Preferences - "Use uPNP / NAT - PMP port forwarding from m

[cabalist]

I am having trouble with a setting.  It is at Preferences>Connections>in the 'Listening Port' box called 'Use uPNP / NAT - PMP port forwarding from my router'.

I am trying to disable (or uncheck) it but it is checked--AND grayed out.

Is this normal?  Do I need to change another setting to 'unlock' this setting?  Or is something broken?


Thanks!

[Peter]

- If you enable Proxy, it does not UPNP forward because it makes no sense. (All proxy renders you passive.)