Recalled prop Matt Dunning has warned Australia's northern hemisphere rivals not to underestimate the Wallabies based on their lack of Tri-Nations success this season.

Robbie Deans' team managed just one win from six attempts against South Africa and New Zealand and will embark on their first Grand Slam tour in 25 years amid rumours of disharmony within the camp.

Dunning, back in the squad for the first time since rupturing his Achilles tendon against the Barbarians in December, said: "Obviously the boys weren't happy with the way they played in certain games, but I thought a few guys played exceptionally well. I think often you get tied down with wanting to change everything and throw everything out when things aren't going quite right, but we're not that far away."

As for the reported rift between coach Deans and several senior players, Dunning added: "I haven't noticed any disharmony at all, it's all pretty good.

"Obviously there's a younger group on this tour than previous years or maybe I'm just getting old, but I haven't noticed it (tension) at all."

The Wallabies begin their end-of-season tour with a Bledisloe Cup clash against the All Blacks in Tokyo before facing England, Ireland, Scotland and Wales in consecutive weeks.