RE: How do I cantrol the source interface

Ok, the search term you are looking for is "bind specific". Often that is controlled by individual application. They may have a config type file. The problem is often that many IBM functions only allow you to set up bind specific on hosting applications. For example, you can bind a specific website to a particular IP address. Client application are a lot tougher to bind specific. For example, saying that all your telnet sessions from your IBM i to another location should bind to a specific address is a lot tougher. I submitted a RFE on giving us the ability to bind specific all such applications was rejected.

If you do not care about the application but you want all communication to a particular address, or range of addresses, to bind from a specific address that is doable. We have H/A software. Formerly Mimix but now Quick-EDD. We have certain lines, VLAN and IP addresses for it to use.
CFGTCP
2. Work with TCP/IP routes
Route Subnet Next Preferred
Destination Mask Hop Interface
*DFTROUTE *NONE 10.10.6.1 *NONE
10.27.252.0 255.255.254.0 10.10.252.1 10.10.252.191

The alternative is to tell your firewall people to punch through both of your IP addresses. We did that for our network guy who tried to set it up so that only certain things could communicate to barcode scanners and barcode printers. Every time we added another interface to our IBM i we had to tell him to allow that IP address to connect to such devices too. I probably could have set up routing to handle those. Especially since they were all on their own subnet.

Rob Berendt