If you have a requirement to test your website with custom IP OR Bypassing your CDN and test directly against your Origin on WebPageTest.
Just like modifying your local hosts file to point to different IP address, Here is the simple trick you can use to point your site to different IP in https://www.webpagetest.org .
You need to use a Script Tab to enter below specific to your website.
setDns www.example.com 127.0.0.1
navigate https://www.example.com
