Leinster penalty in Munster territory now, but it could have gone horribly wrong just before with Thaakir Abrahams inches away from an intercept with space ahead, but Jimmy O'Brien just about got there.
The hosts go for the corner and and hammering the Munster line.
Lee Barron replaces Diarmuid Barron at the break and Jean Kleyn for Edwin Edogbo on the Munsyer team, Sam Prendergast back on for Leinster after clearing his HIA.
Leinster flew out of the traps with Ronan Kelleher crossing for an early try, but Munster hit back brilliantly with scores from Brian Gleeson, Tom Farrell and Ethan Coughlan.
It's been relentless from the first whistle, so an exciting second period lies in store.
Converted try - Leinster 7-21 Munsterpublished at 37 mins
37 mins
Ethan Coughlan (try); Jack Crowley (conv)
Image source, Getty Images
Coughlan redeems himself in perfect fashion as with Leinster inside the Munster 22, he intercepts a pass and races downfield to touch down under the posts. Crowley with a simple conversion and Munster now have a healthy advantage.
Leinster back into the Munster half but after a few rather static passes, they get it wide and look to have the line in their sights until James Lowe spills a pass and Munster get the scrum.