Cedric Heymans, David Marty, Thierry Dussatoir, Lionel Nallet (2) and Vincent Clerc crossed before the break.
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2.
Nallet added the fourth try which took France past 1, 000 points in the World Cup and it was followed by scores from Clerc and Nallet.
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3.
Clerc skated over in between a brace from giant Castres second row Nallet, and four Elissalde conversions meant the hosts led 40-3 at half-time with the bonus point already safely tucked away.