I have customers that are unable to connect to groups of friends etc on XBOX live when it is internal to the network. They are on different Vlans internally but they both get NAT'd to the same Public IP. Is there a way to allow them to connect to one another with a UPNP? I tried setting this up earlier in the year but it didn't resolve the issue.

Please help

I didn't find the right solution from the internet.

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