It's rude to create a diversion (6)
I believe the answer is:
detour
'a diversion' is the definition.
(I've seen this before)
'it's rude to create' is the wordplay.
'create' is an anagram indicator.
'rude'+'to'='rudeto'
'rudeto' anagrammed gives 'DETOUR'.
(Other definitions for detour that I've seen before include "Routed (anag.)" , "Temporary roundabout way" , "Deviation from direct course" , "The scenic route?" , "Roundabout way or bypass" .)