Great News - Bsnl enabled IPv6.

[!!..PD..!!]

Do update if you find out. My router doesn't show expiry it seems. Will check the logs once I get home.

 

[WieldyBinkie]

It was always 30 days since the beginning but for me prefix changed every time

 

[sloj]

Not sure about it being there from the beginning but it makes sense since the pppoe connection is dropped at 24 hrs and connection is re-established, the address will change with it.