Changes to CLUSTERIP between r0 and r1
'''Loadbalancer Less Load Balancing'''
There's not a lot of information on CLUSTERIP on the Internet for some reason.  It's an implementation of an older technique, made easier by an IPTables target extension.
   * Flavio's Technotalk on CLUSTERIP [http://flaviostechnotalk.com/wordpress/index.php/2005/06/12/loadbalancer-less-clusters-on-linux/] [http://web.archive.org/web/20070125103802/http://flaviostechnotalk.com/wordpress/index.php/2005/06/12/loadbalancer-less-clusters-on-linux/] [http://www.rkeene.org/projects/info/resources/projects/ipcluster/flavios-tech-talk-on-ipcluster.html]
   * "Load Sharing with IPtables and Linux-HA" [http://www.linux-ha.org/ClusterIP]
      Only in r0
      Only in r1     -->       Modified slightly between r0 and r1