Get an array of overlaps that exist for a given array of CIDRs for subnets
$ npm i --save cidr-overlap
const cidrOverlap = require('cidr-overlap');
cidrOverlap(['10.0.3.0/24', '10.0.1.0/16']);
//=> [ { startAddress: '10.0.3.0',
//=> endAddress: '10.0.3.255',
//=> cidr1: '10.0.3.0/24',
//=> cidr2: '10.0.1.0/16',
//=> overlapCidr: '10.0.3.0/24' } ]
cidr
{Array} Strings of CIDRs representing subnets in the format'1.2.3.4/24'
. Required.