I have outlined the way it could be done to still allow goods to enter and leave the country without allowing people to enter.
Have said this for a while, no one enters for any reason at any time anywhere, period.
You are welcome to leave, but don't plan on returning anytime soon.
Currently you can still enter from India as long as your flight was not direct.
Also if you have a Canadian passport you can fly from Mumbai to Germany then Buffalo and cross the border and avoid mandatory quarantine hotel orders, but still do a self quarantine at home, which if only one infected person breaks, spreads the Indian variant.
So this travel ban is a hollow political move that does little.
Kind of like saying "Look at me everyone I closed the front door on the barn that goes to the fenced in yard so the horse wouldn't get out."
Meanwhile the back door of the barn, that no one can see, is wide open to the whole country.