Check to disable source NAT’ing of outgoing network traffic.
By default Stabile assigns the external IP address of connections of type “IP mapping” and “external IP” to outgoing traffic. You should only disable this if you are using Stabile in a test environment on desktop or server with only a single IP-address. Disabling this will of course disable any incoming access to you virtual servers from the Internet, this not being relevant anyway with only a single IP address.