The routes between Ireland and France have been registered as part of the international rail line network, which opens the door to greater integration of irish rail system into the continental booking system.
It's one of the results of the big increase in direct sailings to the continent since Brexit.
For the sail rail , Stena are still to join into the scheme which is strange given that they operate it on the UK routes. Brittany Ferries and Irish will operate the scheme which will be enhanced over the next 12 months to make bookings seamless.