IPv6 Address Not Assigned When Connected to Mesh Router in Bridge Mode - Need Help

[Boradbande]

Please help me get ipv6 address on my devices.
I am connected to my ZTE router via bridge mode to my D-Link 1500 Mesh router but I am getting no ipv6 address . I am only getting ipv4 address on my devices. I do not have static ip on my Airtel router ?

with The original ZTE router , I am getting both ipv4 and ipv6 address. what exactly am I doing wrong ? also my Airtel router is not in bridge mode. only Dlink Mesh router is in bridge mode to the Airtel router.
here's the screenshot on my Dlink router of ipv4 and ipv6 settings
Source
Please suggest

 

[abhishek.t]

are you sure you're using bridge mode? the above config shows you've assigned a static ip for D-Link within zte subnet. devices connected to dlink are possibly behind two nats here.

 

[Boradbande]

@abhishek.t thankyou for the reply. here's the screenshot from inside my D-Link router where it says Bridge mode.

Source

what am I doing wrong ?

 

[Boradbande]

also my Airtel router is not in bridge mode. only D-Link is bridge mode to ZTE Airtel router via ethernet.
here are few more setting from my DLINK router. Please tell me is there anything wrong did I do . please help me correct the correct setting.

Source

 

[abhishek.t]

D-Link's 'bridge mode' simply looks like an access point mode. note that 'bridge mode' here in dlink terminology is a different concept than 'bridge mode' on airtel cpe.

the above ipv4, ipv6 settings are for dlink device itself, it only affects how dlink obtains its own address(es).

 

[abhishek.t]

when connected to zte, try test-ipv6.com first

 

[Boradbande]

yes while connected to zte the ipv6 works. but not with D-Link .
also the setting I put above on the screenshots for ipv6 or ipv4 is good ?
anything I need to change ? or another setting do I need to change ? @abhishek.t