Even the Govardhan Mutt Shankararcharya - one of the custodians of Advaita, argues clearly that the varna and jati are integral to Hinduism and he supports the

Even the Govardhan Mutt Shankararcharya - one of the custodians of Advaita, argues clearly that the varna and jati are integral to Hinduism and he supports the caste system. You can find his videos on Youtube.