Sekope Kepu has been hit with a three-week suspension after the Australia prop's red card in Saturday's loss to Scotland.
The Wallabies fell to a 53-24 loss at Murrayfield, with Kepu's dismissal on the stroke of half-time playing into the hosts' hands.
Kepu was given his marching orders by referee Pascal Gauzere when he challenged Scotland's Hamish Watson at a ruck, ramming his shoulder into the flanker's head.
A World Rugby-appointed disciplinary committee charged him with a breach of law 10.4(h), which states that "a player must not charge into a ruck or maul. Charging includes any contact made without use of the arms, or without grasping a player".
39' Red Card - Australia are down to 14 men with Sekope Kepu having been sent off (10-12) #SCOvAUS-- Scottish Rugby (@Scotlandteam) November 25, 2017
The committee confirmed Kepu had accepted the official's decision was correct. His ban was reduced by 50 per cent from six weeks.
It will not apply until February and will run until March 4, meaning the Waratahs star will miss the start of the Super Rugby season.
-- Qantas Wallabies (@qantaswallabies) November 26, 2017