Double NAT problem with gateway

Hi I'm looking to fix double Nat problem with Nokia fastmile 5g gateway can anyone please help I also have a problem on my Xbox series s which says upnp not successful could anyone please help

You'll always be double NATed, your carrier have a CGNAT, and then another NAT in your router.

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So there is no way at all I can get upnp successful?

Don't know, not familiar with the xbox uPnP use case.

VPN might work.

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I even if you made upnp work with the OpenWrt router, no sane ISP would allow it on the cgnat. So your best bet is with ipv6, if supported.

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Ok so how do I go bout download the openwrt I'm new to this sought of stuff

My gateway is Nokia fastmile 5g 5G-24W-A I'm also with Optus network thanks

Is it supported? https://openwrt.org/toh/start

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Hey it's not supported unfortunately what can be done now?

Verify if your provider offers IPv6. You then might be able to connect without nat.

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I've managed to get UPnP working on my double-NAT setup by installing miniupnpd-igdv1 instead of the regular miniupnpd, assigning the OpenWRT router's WAN IP address as both reserved and DMZ in my ISP's gateway, and setting a STUN server (host is stun.stunprotocol.org and port is 3478) in MiniUPnP Advanced Settings. I don't know if every single one of those things is required but it does work right now.

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