Linux iptables can interfere with load balancing of traffic and must be disabled on the Dispatcher machine.
lsmod | grep ip_tables
The output from the
preceding command might be similar to this: ip_tables 22400 3
iptable_mangle,iptable_nat,iptable_filter
Issue the following
command for each iptable listed in the output to display the rules
for the tables: iptables -t <short_name> -L
For
example: iptables -t mangle -L
iptables -t nat -L
iptables -t filter -L
If iptable_nat is loaded, it
must be unloaded. Because iptable_nat has a dependency on iptable_conntrack,
iptable_conntrack also must be removed. Issue the following command
to unload these two iptables: rmmod iptable_nat iptable_conntrack