Following that advice with the UFiber ONU as a router definitely broke Internet for everything except the customer's Nintendo.

On 4/20/2021 1:59 PM, Mathew Howard wrote:
I would have thought so, but maybe it depends on the router.

On Tue, Apr 20, 2021 at 12:58 PM Steve Jones <[email protected] <mailto:[email protected]>> wrote:

    packets hit NAT table
     before port forward isnt it?

    On Tue, Apr 20, 2021 at 11:46 AM Mathew Howard
    <[email protected] <mailto:[email protected]>> wrote:

        I didn't realize that would happen with port forwarding, but
        that makes sense. but to be fair, the people at Ubiquiti are
        probably assuming you'd be forwarding to a router and there
        wouldn't be any other devices.

        I guess the Nintendo people just assume no other devices are
        important...

        On Tue, Apr 20, 2021 at 11:28 AM Adam Moffett
        <[email protected] <mailto:[email protected]>> wrote:

            Correct. DMZ does not break the Internet access for all
            other devices.

            Forwarding ports 1 through 65535 to a single device as
            suggested by some insane people at Nintendo and Ubiquiti
            will break the Internet for all other devices.


            On 4/20/2021 12:24 PM, Zach Underwood wrote:
            DMZ does not break the internet access for all other
            devices behind the NAT. DMZ ip is where the unsolicited
            packets will be forward. Solicited packets with a
            matching NAT state will be forwarded on to the original
            host.

            On Tue, Apr 20, 2021 at 12:07 PM Adam Moffett
            <[email protected] <mailto:[email protected]>> wrote:

                Except DMZ only forwards the ports not being used for
                other connections.

                This breaks the Internet for all devices except the
                one you forwarded ports to.


                On 4/20/2021 11:30 AM, Mathew Howard wrote:
                Isn't that basically the same thing a DMZ does?

                On Tue, Apr 20, 2021 at 10:18 AM Adam Moffett
                <[email protected] <mailto:[email protected]>>
                wrote:

                    Oddly enough here's "UI-Team" on the Ubiquiti
                    forum proposing the same thing as a solution for
                    a "DMZ"

                    
https://community.ui.com/questions/UFiber-Loco-NanoG-No-DMZ/1f7720eb-f2fe-4af3-b312-1226de3a8d0b
                    
<https://community.ui.com/questions/UFiber-Loco-NanoG-No-DMZ/1f7720eb-f2fe-4af3-b312-1226de3a8d0b>

                    Insane.


                    On 4/20/2021 10:15 AM, Adam Moffett wrote:

                    Agreed, but apparently doesn't work when the
                    router is a UFiber ONU.

                    I'm more amused at Nintendo's suggestion.  One
                    of our tech support guys actually tried it and
                    it broke the customer's internet on all devices
                    that weren't the switch.


                    On 4/20/2021 8:57 AM, Darin Steffl wrote:
                    Consoles should never need port forwarding.
                    Enable UPnP on the router and you're done.

                    On Mon, Apr 19, 2021, 1:46 PM Adam Moffett
                    <[email protected]
                    <mailto:[email protected]>> wrote:

                        Trying to help a guy with a Nintendo
                        Switch issue and encountered this official
                        tech support info:



                        
https://en-americas-support.nintendo.com/app/answers/detail/a_id/22272/~/how-to-set-up-a-routers-port-forwarding-for-a-nintendo-switch-console
                        
<https://en-americas-support.nintendo.com/app/answers/detail/a_id/22272/~/how-to-set-up-a-routers-port-forwarding-for-a-nintendo-switch-console>

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