But it's useful! If your search domain is `internal.company.com` and you've got a Jira instance at `jira.internal.company.com` then all you've got to do is navigate to `jira` and it works.

It's also quite possible to turn off walking up the search domain: it's just a checkbox.

None of which makes it a good idea, and the best thing to do is actually to just _not set_ the search domain.