Where does “unrest” come from?

I need to work through this chain carefully, but I notice there's a significant problem: the chain provided doesn't actually lead to "unrest." The chain shows: English rest ← English arrest ← Proto-Indo-European óynos ← Latin ad- ← Proto-Indo-European steh₂- This chain traces "arrest" and "rest," but "unrest" would require the prefix "un-" to be part of the etymological chain, which it isn't listed here. Additionally, the chain seems malformed (óynos appearing twice without clear connection to the other elements, and the progression from PIE to Latin to English being unclear). Without a valid chain that actually supports "unrest," I cannot write an accurate etymology sentence per your rules, which state "State only what the chain supports. Do not invent dates, cognates, or intermediate steps." Could you provide a corrected chain for "unrest

unrest (English): A state of trouble, confusion and turbulence,...