httpd servers are showing incorrect JBoss nodes when run on the same box

Issue

• We run multiple httpd servers as mod_cluster balancers on the same box. For instance, httpd a balances JBoss cluster a and httpd b handles JBoss cluster b. We see that httpd a is finding cluster b though and httpd b finds cluster a. How can we properly isolate these httpd servers and the JBoss clusters they should individually balance?
• We have multiple mod_cluster httpd balancer instances on the same server, and mod_cluster is mixing our traffic. Each balancer is sending traffic to clusters that should only be handled by the other balancer.