From someone who knows, I can confirm the rumour is correct. Ethiopian airline will use Dublin airport as a technical stop for fueling only. Washington Dulles is a daily flight, with Toronto only operating 3 times a week. However traffic rights have not been approved for these 2 routes currently. As already stated, the return flight will operate direct back to Addis and not via Dublin. The Los Angeles will operate with traffic rights via Dublin both ways, starting on the 20th June. I hope that clarifies the rumour. The reason why they are moving there operation from Rome to Dublin is cited on rising nighttime costs for landing and parking at Rome. Dublin offered them a much better deal