CLUSTERIP r3 (See the current copy)
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 [1] [2] [3]
- "Load Sharing with IPtables and Linux-HA" [4]
- Microsoft calls this technique "Network Load Balancing" [5]
- LARTC has a longer explanation of the underlying mechanism [6]