France's Romain Ntamack celebrates after their Nations Championship win over Australia in Brisbane.

France staged a magnificent second-half fightback, overturning a nine-point interval deficit to overpower Australia 42-26 in a pulsating Nations Championship clash on Saturday.

After suffering a heartbreaking two-point loss against New Zealand last weekend, Les Bleus ran in four unanswered tries after the break to secure their first victory over the Wallabies in Brisbane since 1972.

It was a harrowing case of déjà vu for the hosts, who had also led Ireland last Saturday before collapsing late on to lose by two points.

Joe Schmidt's men comfortably matched the French in the opening 40 minutes but faded drastically in the second stanza, completely overwhelmed by the breathtaking speed and clinical execution of the visitors' expansive attack.