What you're describing seems like an inexcusable state of affairs, but as a practical matter `man -k <search term>` or `apropos <search term>` is useful for fin

What you're describing seems like an inexcusable state of affairs, but as a practical matter `man -k <search term>` or `apropos <search term>` is useful for finding poorly named manpages. Of course in the specific case of "ip", both are going to return quite a haystack to search through...