On the other hand, if such a browser has a button to enable such access of “subnet 192.168.0.0” AND such button is NOT accessible from chrome:// URI AND NOT ac

On the other hand, if such a browser has a button to enable such access of “subnet 192.168.0.0” AND such button is NOT accessible from chrome:// URI AND NOT accessible from JavaScript, then this feature of preflight-ing a request for accessing such private IP subnet MIGHT then becomes a palatable and acceptable approach to mainstreaming this feature. - Somehow, I get the feeling that such a button will be foisted using chrome:// or made accessible using JavaScript … by the Chrome development team.