If you are talking about devices logging to syslog, the IP addresses are always formatted the same way and are available in script variable to capture, modify or log.
If you are referring to source/destination IPs from say a firewall log, then solarwinds/kiwi has no control over how those logs are sent from the host, but the logs can be parsed out in a rule via scripting and then the message can be modified before logging/displaying. The script parsing would be different for every type of device you have, but if you're running all ASAs for example, one parsing script could likely handle them all.
If you can post some example logs, I might be able to help you with some scripting, but no promises on a time frame, I'm stretched for free time lately.