lua-wheels

This pure-Lua module include a useful tool for some computes with cidr, and without installing other modules.

Usage

local cidr = require "cidr"

local first_address, last_address = cidr.parse_cidr(ip_cidr)  // ip_cidr formats like 192.168.10.10/24

local ip_num = cidr.ip_2_number(ip)  // get the ip to decimal.

if ip_num >= first_address and ip_num <= last_address then   // judge if ip lies between the cidr.
    return true
else
    return false
end

Other

This module now supports only ipv4.