As mentioned in previous answer What are some hymns elaborating and explaining about dasas in rig-veda? by B.N.Bhaskar, that 'dasa' itself is neutral term and it is not an enemy tribe and 'dasyu' is for a theif/robber so not a tribe.
But according to various foreign historians and even our one of the most emminent historian PV Kane in his book History of the Dharamshastra states here the arya vs dasa conflict.
So according to the vedas what was this arya vs dasa tribal conflict, if there was a conflict at all?
Is there a consensus to this term or is it open to interpretations?