Ulster's unbeaten start to the Pro14 season has come to an end with a 24-12 loss to Leinster.
A ruthless display in the second half helped the champions come away with victory in Friday night's interprovincial clash at the RDS Arena.
Ulster took the lead with a John Cooney penalty after 14 minutes, before Dave Kearney scored Leinster's first try of the match.
Further penalties from Cooney put the visitors 9-5 up before the break.
Second half tries from Sean Cronin and Robbie Henshaw put Leinster in front, but Cooney landed a long-range effort to make it 17-12.
Ulster pressed hard but a further try from James Tracey rounded off the derby win for Leinster as they reaffirmed their status as favourites to retain the Pro14 crown.