Leinster held on to beat Munster in their big URC interpro clash.
The boot of Harry Byrne kicked them to a 13-8 win in Limerick.
A second half try from Dan Kelly wasn't enough for the hosts to come away with a victory at Thomond Park.
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Ulster moved themselves up to 5th in the URC table with a 29-24 win away at Connacht earlier.
