I know I've seen it before, but I'm currently drawing a blank. What I'd like to do is get the router/firewall to consistently return it's public IP when it appears in traceroutes. Idea being that techs will recognize the site IP, but not necessarily the IP of every possible point to point interface on a given router.
Is a series of src-nat rules the way to do this? Am I completely insane? I don't see how this would break PMTU or anything else troubleshooting wise, though it would obscure what path is being taken if there are two between any two routers. That's of limited usefulness, because you have no evidence that the responding router is sending on the same interface it received on anyway.