The Irish short-stay visa waiver programme says that nationals of Oman are allowed to travel to Ireland without an Irish visa, provided that they have obtained a short-stay visa in the UK and have gained lawful entry into the UK. It is explicitly stated that the Electronic Visa Waiver (EVW) is a valid short-stay visa for the purpose of the programme, with some restrictions.
However, the UK government website says that Electronic Visa Waivers have recently been obsoleted and have been replaced by Electronic Travel Authorisation (ETA) for nationals of Oman, Bahrain, Kuwait, Qatar, Saudi Arabia and United Arab Emirates.
If a national of Oman has obtained an ETA and has gained lawful entry into the UK, are they allowed to travel to Ireland under the programme?