Related question: I'm trying to buy a ticket on AI.com from Europe to India which I want to pay with netbanking and it seems if you book a flight from outside India netbanking does not appear as a payment option. The debit card issued to me by HDFC on my NRO account is a Rupay, so that is not accepted at all (only domestic flights).
Can one of you make a dummy booking from CPH/ARN/VIE/FRA to DEL in March and see if netbanking is shown as an option?