I see a note on Irish Rail's Ireland v Denmark page that DARTs will not serve Lansdowne Road for most of the evening, and based on it being trialed ahead of the EUROs, it might be just the start!
Interesting though that Grand Canal will be open.
https://www.irishrail.ie/offer/The-Boys-in-Green-are-back-in-the-Aviva-Stadium
Please Note - Lansdowne Road DART Station will close temporarily on the evening of Monday, 18th November 2019 for the Republic of Ireland vs Denmark UEFA EURO 2020 Qualifying match.
This closure, which will take place between 17:30hrs and 23:00hrs, is part of a trial operational exercise ahead of the Aviva Stadium’s hosting of four games during UEFA EURO 2020 next summer. DART services will continue as scheduled, but passengers will be required to disembark at either Grand Canal Dock DART Station or Sandymount DART Station during the closure.