Ireland were below their best on Saturday but gave new head coach Andy Farrell a winning start against Scotland.
England and Scotland are the only sides without a new head coach for the 2020 edition of the Six Nations.
Ireland should be a major threat in the Six Nations at the start of a new era under head coach Andy Farrell.
The Six Nations returns this weekend, with defending champions Wales hosting Italy, England facing France and Ireland taking on Scotland.
Gregor Townsend has told Scotland to make themselves "a nightmare to deal with" when they tackle Ireland in Dublin in the Six Nations.
Johnny Sexton and Jordan Larmour have been joined by uncapped number eight Caelan Doris in Ireland's team to face Scotland.
The mercurial Finn Russell has been punished for a breach of team protocol just nine days before Scotland's first Six Nations game.
Johnny Sexton expects to lead Ireland against Scotland in Dublin and Jordan Larmour is expected to be in contention.
Andy Farrell has opted to add more depth at centre to Ireland's Six Nations squad in the form of Stuart McCloskey.
Andy Farrell has called up five uncapped players into his first Ireland squad, with Johnny Sexton confirmed as the team's captain.
Joey Carbery has suffered another injury blow and will play no part in Ireland's bid to regain the Six Nations title.
Ireland have named a 45-man squad to train in Dublin that omits Rob Kearney, Jordi Murphy, Sean Cronin, Jack Carty and Kieran Marmion.
Lyon are reportedly targeting Ireland fly-half Johnny Sexton, but Leinster insist there has been no suggestion he will leave the province.
Leinster head coach Leo Cullen is unsure how long fly-half Johnny Sexton will be out of action.
Rory Best will bring his rugby career to an end by captaining Eddie Jones' Barbarians side against Fiji at Twickenham on Saturday.
Six of the top seven teams in the world rankings will start life with a new coach following the Rugby World Cup.