Splitting this off from #168877: Path-redirect as an option on the node form (add or edit) at Dave Reid's request. See also #281802: Add redirect on node creation which perfectly describes the use-case (but was basically a support request for D5 given #168877).

Anyway, the D6 version of #168877 only lets you manipulate redirects on node/N/edit, not node/add/[foo] since the D6 version is trying to be fancy with a whole table of existing redirects, etc. And to add a new redirect, you have to follow a link off to the admin area of the site and get redirected back to the edit form. However, if you're populating a Drupal site from an older (usually non-Drupal site), it can be very handy to add a redirect as you're creating the node, instead of having to do it as a 2-step process. It'd also be nice to be able to directly add redirects on node/N/edit, but that's definitely for a separate issue.

In D5, there's a simple UI for this on the node/add form. I'd love to see that back again in D6 and beyond. However, before I spend any time on it, I'd love to get input from the maintainers here to ensure that the strategy pursued will be viable and ultimately commitable. So, please share your thoughts on the overall proposal, and any specific implementation details you're concerned about.

Thanks!
-Derek