Membership access to all visitors from an IP address

I am working on a journal website and would like to provide IP access to users in the Library i.e. all the visitor from a particular IP will have access to a particular access level without the need for login once the IP is registered. Is there any way I can do this like the Restricted Site Access plugin feature. The Membership plugin is conflicting with the Restricted Site Access plugin. I really love the Membership plugin and would like to use it.