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<blockquote data-quote="bobtomay" data-source="post: 1321484" data-attributes="member: 24160">?????It is not sending any IP addresses back to your ISP.&nbsp; Your external network will have only one IP that is being used outside of your local network on the internet and that IP is set by your ISP.&nbsp; If that IP changes, it changes because your ISP changed it - you cannot change it nor can any of your devices.Your internal network - the one set up by your router - the Airport Extreme -&nbsp; will set up a different IP for every single device that's connected to it.&nbsp; That IP is how it &quot;routes&quot; - get it? route / router - the information received from the internet back to the device that asked for it.And the router does not send those local IPs back to the ISP.&nbsp; Those are meaningless to the ISP.&nbsp; The only IP it knows is the one that it has provided to your modem.No individual IP&nbsp; on your local network for each device - then no connection to the internet for each device.&nbsp; It'd be a &quot;homeless&quot; device.&nbsp; No way to get mail, no one would know how to get any info to it...</blockquote>

[QUOTE="bobtomay, post: 1321484, member: 24160"] ????? It is not sending any IP addresses back to your ISP. Your external network will have only one IP that is being used outside of your local network on the internet and that IP is set by your ISP. If that IP changes, it changes because your ISP changed it - you cannot change it nor can any of your devices. Your internal network - the one set up by your router - the Airport Extreme - will set up a different IP for every single device that's connected to it. That IP is how it "routes" - get it? route / router - the information received from the internet back to the device that asked for it. And the router does not send those local IPs back to the ISP. Those are meaningless to the ISP. The only IP it knows is the one that it has provided to your modem. No individual IP on your local network for each device - then no connection to the internet for each device. It'd be a "homeless" device. No way to get mail, no one would know how to get any info to it... [/QUOTE]

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