Based on “Test web apps on iOS by DNS spoofing your LAN with Ettercap” by Henrique Barosso. Modified to work on a Mac running OS X. To access a website or service that uses a virtual host but isn’t in DNS, you need to add it to the hosts file of the machine you’re using for testing. Unfortunately, you can’t edit the hosts file of a (non-jailbroken) iPhone or iPad. This makes testing difficult.