I am building app for a managed package which is using metadata Api to setup page layout after installation of the package. And in order to do that, I have put https://v6.ap2.visual.force.com into remote site settings.
However, when the package is installed on client side, the domain name: ap2 is not fixed. It can be ap3, ap4 or anything possible. How should I set remote site settings in this case? Or should I just give them an instruction that they should set them up by themselves?