Leinster's second defeat of the season came following a high scoring affair at the RDS.
A lack of accuracy cost Leinster in their inter-pro derby against Ulster yesterday evening.
Despite driving rain the two provinces played out an entertaining New Year's Day clash at the RDS.
Ulster landed a rare victory in Dublin thanks to an educated kicking game at 10 from Billy Burns, and tries from Nick Timoney and Jacob Stockdale.
While tries from Cian Healy, Rob Russell and Dan Sheehan weren't enough to prevent the league leaders from slipping to a 21-22 defeat.
Leinster Head Coach Leo Cullen says he was happy with elements of his side's play:
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