AltostratusPool starts out as the default pool-1. Priority 100 rule gets executed, pool gets set to pool-2 Priority 110 rule gets executed, pool gets set to pool-3 Rule processing ends. Pool remains as pool-3.
If you want it to stop rule processing in irule-1, add "event disable HTTP_REQUEST" (or just "event disable", as the current event is the default).
If you do something like this, you should consider adding "event enable HTTP_REQUEST" in the HTTP_RESPONSE event, so subsequent HTTP requests on the same connection will get passed to the rules' events.
