This may be useful when you don't use dynamic DNS sevices.

send_global-ipaddr-info.py

#!/usr/bin/env python

import urllib2
import re
import os
import socket

#hostname = socket.gethostname()
hostname = ""
urlprovider = 'http://www.ugtop.com/'
targetnode = ''
targetsshdport = '22'
targetdir = "~/var/globalipaddrinfo/%(hostname)s" % locals()
targetfile = "%(targetdir)s/ipaddr" % locals()
privatekey = '~/.ssh/id_rsa'

regex = re.compile('^([0-9]{1,3})(\.([0-9]{1,3})){3}')

file = urllib2.urlopen(urlprovider)

for line in file:
  matchobject = regex.match(line)
  if matchobject == None:
    continue
  else:
    ipaddressstring = matchobject.group()
    cmd = "ssh -i %(privatekey)s -p %(targetsshdport)s %(targetnode)s \"mkdir -p %(targetdir)s; echo %(ipaddressstring)s > %(targetfile)s\"" % locals()
    os.system(cmd)
    break
file.close()