AirPort Extreme router mode and iOS 14 private addresses

DHCP and NAT is a much more secure setting for the AirPort Extreme than Bridge Mode, which effectively shares the devices on your network with other devices at other apartments......something that you would want to avoid if at all possible.

The AirPort will be "happy" and will display a green light if you use AirPort Utility to click to "ignore" the Double NAT notice. Actually, the AirPort does not really care that it is blinking amber, but you might.

Open AirPort Utility, click on the AirPort and a smaller window will appear. Click on the small amber dot next to Double NAT and you will see the option to ignore the Double NAT notice.

Building networks tend to be cheap.. and hand out private IP addresses.

Tell us what private IP you get.. it is safe to post this as nobody can see you on private IP over the internet.

eg.

Since putting a bridged Airport on the network results in this.

It will have issues because the building router will not allocate you more than one IP.. nor is it properly setup in 80% of cases.. so everyone else in the building can also see your clients.. not so good that!!

Do use DHCP and NAT.

Make sure the building IP is not the same range as the Airport IP.. see mine above.. main router is on 192.168.20.x and Airport is on default 10.0.1.x

If you stick your Airport on any building network and it gives you 10.x.x.x network then change Airport to 192.168.x.x here. Under Network tab. Network Options.

To get rid of the red dot and annoying flashing amber.. select IGNORE. That is equivalent of putting your head in the sand and hoping the charging elephant cannot see you.

But using Building Networks.. that is the way it works.. Double NAT is the best solution under the circumstances of cheap internet via Building.

Otherwise buy LTE router and pay for your own 4G service..

Good Luck!!

Beaten by Bob.. again.. ~~~ waves.. morning Bob!

Unfortunately 10.x.x.x is most popular private IP range for buildings and the like.. so YES.. you do need to change the range of the Airport.

This is trivial.

In Airport utility go the Network tab. Click Network Options near the bottom.

Now you have this page in front of you. Click the down arrow on IPv4 DHCP range. Select 192.168

voila.. done that. Click save.

Voila,, click update, Then click continue in the dialogue box.

Next your computers etc will drop off the network.. and you might need to restart them..

End result .. your Airport is now on 192.168.1.1 home address.

This makes sure NAT works properly.. the Airports do not seem to handle 10.x.x.x on both WAN and LAN very well, even with correct subnet changes.. it however works fine with 192.168.. just to increase your knowledge a bit.