I have been trying to configure to access my Shares outside the network and I followed the wireguard blog post on unraid.net . But i got to know that my ISP ( JioFiber ) does not allow port forwarding through IPv4. If i try to map the address via IPv4 i can access it via the internal network not outside. This is done due to some security reasons as said by my ISP. So I got to know that my ISP allows PORT FORWARDING via IPv6 address where each device the router connects to it assigns a unique IPv6 address. i could verify it in windows 10 but not here in unraid. Me being new to unraid it shows ipv4 being set and ipv6 as not set. How do i set a specific IPv6 address to unraid and would it help me to port forward using duckdns and wireguard to access my files outside the network?

Pretty sure you would need to configure your router to relay DHCP leases that your ISP delegates rather than giving the device a manual IPv6 address, then you will need to set up a dynamic dns forwarder with something like duck dns to update when that v6 address changes.