IPAddr#mask_addr isn't a method
Right now there's no way to get the current value of an IP address's mask from an IPAddr instance. While there's an instance variable (
@mask_addr), there's no attribute reader to get it's value, and relying on reading the instance variable isn't pretty nice for a stdlib (stable as it might be).
Is there any particular reason why this is not public, or would a patch/pull request adding the corresponding
attr_reader be accepted?