Yes, I have a similar question. What is the WAN lease? If I hit renew WAN lease, will that change my external IP? And if I changed a digit or two on the MAC address (since I can't find a clone button) will that change my modem external IP? Thanks.
WAN is Wide Area Network also known as your ISP. So that's your external IP....the one you see on our homepage.
You'll just have to test and see if what you're asking works. The steps you're wanting to take will work on some systems but not all. So give it a shot and let us know.