There were wild celebrations for the Ireland under-20 side amid a cacophony of boos from the home crowd, as they hung on to claim a famous RBS Under-20 6 Nations win over France in chilly Grenoble.
A last-minute lunge for the line from French number eight Karl Chateau was ruled inconclusive by television match official Derek Bevan, as Mike Ruddock's charges secured their second win of the championship.
Out-half Clément Otazo had put France 6-3 ahead at the break, with captain Paddy Jackson kicking Ireland's points.
A terrific individual try from Foster Horan early in the second half was followed by two more Otazo kicks, but JJ Hanrahan's 73rd-minute penalty decided this closely-fought encounter.
