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