I suspect your issue is they way cisco load balances and asymetric routing of your traffic.
Its not this simple but say even addresses alway go out the first path and odd addresses alway go out second.
The nice thing with nat is that it will consitantly pick the same path to a outside machine and therefore always use the same nat address.
You problem is that the outside machine is picking the outside interface to use and the inside machine is using the load balance to pick the path. Just luck if it works. Since you are using 2 differnt NAT addresses to the remote machine you will never get a session open.
If all you have to worry about is 2 machines you can just policy route the traffic back to the proper outside interface to match your nat statements.
I suspect you will also find outbound issues eventually. Many sites use source IP address for security. They get very confused when they think your ip address has changed when they hand off processing to another machine that has a different IP address but is really the same site.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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