Giovanni Trapattoni's side were denied a place at the finals by France striker Thierry Henry's handball in the build-up to the extra-time equaliser in the World Cup qualifying second-leg play-off which earned France an aggregate 2-1 victory in November.
Les Bleus crashed out of SA2010 at the group stages, with the team going on strike and Nicolas Anelka being sent home for a foul-mouthed tirade.
"I didn't see it but I did laugh," said Dunne.
"If you're going to cheat to get there, you might as well try when you are out there but they didn't even do that!"
Meanwhile Henry, who recently announced his retirement from international football, has defended captain Patrice Evra for his role in the debacle.
Evra was heavily criticised by France legends Marcel Desailly and Lillian Thuram who both called for the Manchester United defender to be banned from future internationals for his role in South Africa.
"Evra did it with his heart. He didn't do anything bad but sometimes doing it with your heart means you don't see things," Henry said.
"He is an honest guy and didn't do anything wrong."