Cannot Add ".local" Domain to Allow List for VPN

I use OnlineFamily on my own personal computer. I also connect to work remotely using a VPN. We use the “.local” domain suffix for accessing local network resources. This is a common practice in Windows network environments. The problem is that your Web interface does not allow us to add a domain with a “.local” suffix (ie. mycompany.local). Could you please allow this suffix to be used when adding a domain?