Yeah, conspicuously not "give those crazy Leinstermen, Munstermen and Connaughtmen what they want" though.
Only because the Liberals had already pledged to give Ireland a parliament prior to the war and had pledged to give them one for some thirty-odd years before that! Carson's behaviour and the Ulster Covenant were a reactionary backlash to Asquith's 1912 proposal for Irish Home Rule.