ip地址查看物理地址

require 'net/http'
require "uri"

def ip2addr(ip="google.com")
  url=URI.parse("http://ip138.com/ips8.asp") 
  res=Net::HTTP.post_form(url,:ip=>ip,:action=>2)
  res.body.scan(/<ul class="ul1">(.*)<\/ul>/).to_s.scan(/<li>(.*?)<\/li>/)
end

puts ip2addr