Leinster too strong for Ulster
The 42-13 scoreline may have been flattering but Leinster did enough to outwit a young Ulster side and extend their lead at the top of the RaboDirect Pro12 to six points.
Ulster showed huge commitment in defence at a well-attended RDS, but first-half tries from Fionn Carr, Sean Cronin and Leo Auva'a had Leinster 21-6 ahead at the break.
The hosts were nowhere near their best and Ulster hit back with a well-taken try from debutant Chris Cochrane. However, Leinster's forwards dominated the final quarter and a penalty try and further touchdowns from Ian Madigan and replacement Jamie Hagan completed the home win.