getip()

gistfile1.rb

# net-dns gem
require 'net/dns/resolver'
# This is where the net-dns resolver makes queries
ENV['RES_NAMESERVERS'] = '111.222.333.444'
def getip(name)
  ip = IPAddr.new 
  Resolver(name).each_address do |address|
    ip = address
  end
  if ip == '::' 
    raise "invalid host"
  else
    return ip.to_s
  end
end