The fixture details have been confirmed for the pool stages of next season's Investec Champions Cup.
Munster will host Racing 92 first, and go away to defending champions Bordeaux-Begles, as well as Bristol Bears, and finish at home to Gloucester.
Leinster will begin with a trip to Clermont on Saturday October 17th, before home games against Sale Sharks and Pau, and a visit to Leicester Tigers.
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While first up for Connacht is the visit of Saracens to Galway - that's followed by a trip to Exeter Chiefs.
They'll host European heavyweights Toulouse at Dexcom Stadium, and go to Ronan O'Gara's La Rochelle in the final round.
