How to successfully do pppoe ipv6 on openwrt with airtel bb?

Also I have already sorted this problem on pm with you so what is the need to create a whole thread.
 
Wan6 kis device pe hai?
Make it to @wan, it should be dhcpv6.
All this is easily available on openwrt forums, you just need to read.
 
WAN6 should be an alias of WAN. Also, the status will be "Network device absent" while the interface is restarting
 
Delete the wan interface and make a new one, let ipv6 stay at automatic and please don't change Any other settings.
 
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