The Irish pubs - Paddy's, The Dubliner perhaps. Hasn't been any greater interest in rugby in the last 7 years and you are competing agains winter Olympics!!
Thank you, didn't think of the winter Olympics.
For future reference, if anyone ever searched for this, The Dubliner is the only place I could find in Oslo that was showing the Rugby. It was actually the only place that could get the channel it was on. It turned out to be a great little boozer.