France scored a tournament-record 30 tries last year and a rout looked on the cards at a rainy Stade de France on Thursday night. Les Bleus led 29-0 thanks to prolific left winger Louis Bielle-Biarrey's second try but Ireland rallied with two second-half five pointers.
"It's a great result for us, but we shouldn't get carried away," France fullback Thomas Ramos said.
"We won the territorial battles and the aerial challenges, which helped us to keep them under pressure."
Bielle-Biarrey scored the first try in the 12th minute and recalled flyhalf Matthieu Jalibert got the second with just over 20 minutes played.
A slick move worthy of France's backs — but orchestrated at speed by three of their forwards — led to third scored by rampaging lock Charles Ollivon.
Although the opening exchanges were close enough, that was only until Bielle-Biarrey showed just why he was voted the tournament's best player last year after scoring eight tries.
He broke two tackles down the left wing, including one that briefly dropped him onto his knees, before powering over.
Ramos converted that one but missed his next attempt after Jalibert had cut through a weak tackle from opposite number Sam Prendergast for his fourth international try.
A third France try soon followed. Prop Jean-Baptiste Gros picked up a loose ball and passed to lock Mickael Guillard, who offloaded to give Ollivon his 18th international try, converted by Ramos.
Ireland did not resist for long after the break.
Ramos set up Bielle-Biarrey for his second try with a soccer-style flick with the outside of his foot, sending the jet-heeled winger scampering into the left corner for his 22nd international try in just 23 Tests.
Ireland finally got on the board with tries in quick succession from back-rower Nick Timoney and prop Michael Milne, who both came off the bench.
Prendergast converted both.
Lock James Ryan flattened Jalibert with a spiteful challenge off the ball in the closing stages. Jalibert recovered and fed Theo Attissogbe in the right corner with seconds left for another converted try.
"We did the basics well and managed to play a bit too," star France scrumhalf and skipper Antoine Dupont said.
"We combined business with pleasure."
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