Generally speaking, your last name displays your caste. Mangolia tried to refrom their clan/caste system by eliminating their family name. Problem solved for a short period, but as population rose and urbanization took place, this wasn't feasible anymore, it created a lot of confusion. Finally, they made it mandatory for everyone to register the full name. There might be a different approach to this. But i don't believe this is something that will be eliminated overnight in Nepal. Education is the only way to get rid of this, once people are educated and enter into the professional world, who cares if your professor is 'Damai' caste, your doctor is' Kami' caste, your driver is 'bahun' and so on. Acceptance of intercaste marriage in the society is a positive sign of heading towards this direction.