Yes, I know I am posting to an old thread. Use case 1: I have an ACL that has multiple lines that may contain overlaps and I want to streamline the list. Use case 2: I have two tools. The first tool allows overlapping ranges and and determines meta data by the most restrictive. example.. 10.10.0.0/22 Production 10.10.1.0/24 Production_webservers if the address is 10.10.0.10, it will use the meta of Production. Easy... Tool two doesn't like the overlap, so the same list would have to be split into multiples with no overlap. example.. 10.10.0.0/24 Production 10.10.1.0/24 Production_webservers 10.10.2.0/23 Production Crazy, right? ... View more