Munster ended a four-game losing streak against Leinster with a 26-17 triumph on Saturday, while Edinburgh retained the 1872 Cup.
Leinster had James Lowe sent off as their seven-game unbeaten Pro14 run was ended by rivals Munster in an eventful derby clash at Thomond Park.
The Conference B leaders had won the last four meetings between the teams but paid the price for poor discipline on Saturday, with Cian Healy and Tadhg Furlong both sent to the sin-bin inside the first half-hour of the fixture.
Furlong was still off the field when Lowe was shown a red card for taking out Andrew Conway as the Munster player attempted to claim a high kick, the challenge seeing him land on his head as he was flipped in the air.
Chris Cloete scored a try before being carried off on a stretcher while Keith Earls intercepted a pass to reach the line for the hosts, who relied on Joey Carbery's boot - the fly-half kicked 14 points against his former team - to secure a 26-17 win.