O'Sullivan cautious over Six Nations challenge

Ireland boss Eddie O’Sullivan has been encouraged by the performance of Munster and Leinster in the Heineken Cup but warns their success will have only limited influence on the national side’s fortunes.

The Irish provinces cruised into the quarter-finals with two thumping victories over English clubs, Munster crushing Guinness Premiership leaders Sale 31-9 and Leinster dispatching pool winners Bath 35-23.