Same problem all the time. I wish I could take it back, I've been fighting with it since the day I opened it. I have spent countless hours upon hours. Bought additional equipment, eliminated every single possible problem that isn't the modem.
The modem simply refuses to give out Ipv4 addresses, it will give out Ipv6 addresses. If you put the router into the auto config? whatever the non-default option you will 100% have this problem.
I have change the channels multiple times, which worked perfectly at first, then that stopped working as well. Then I've had it limping along for about a month, trying to recover from assigning IP addresses to wifi devices. This will 100% also cause a complete and total failure from the modem and then nothing will connect.
Today I went to try some new channels as it has barely been working and I am afraid to restart it because it will cause all these problems all over again and today I ran into a brand new problem. Now, no matter what I do it will not give out a 5ghz signal, will not allow me to turn on the smart connection option, will not enable AX Wifi 6 options, you can change it to whatever you want from that busted ass genie you have to use since the app is even worse. and it will say updating, and when it gets to the end it freezes, when you finally are able to log back into the router (hardwired from a computer) none of the changes you made will be present, all the options will be shut off, and it will be stuck on 54gbs with no SSID being broadcast. Unplugging and resetting does nothing except allow you to log in before being froze out. The app does the exact same thing. Can't wait to start from scratch and then manually add all 70 devices again, go through the Alexa app and change every routine again. It's a **bleep** nightmare that I have had to live through seemingly every other month or more.
Who knows how long it's going to take to figure out what's wrong this time. This product is clearly some garbage they made for Costco and I would take it back in a heart beat if I could. It's absolutely the worst piece of hardware I've ever used. The experience has been sooooo horrible. I'll never buy another Netgear product again. I would highly recommend everyone stay as far as away from this cable modem as possible, don't touch the box, it's so bad doing so could possible destroy your network by proxy.
Take it back as soon as possible, go buy something else, anything else, you won't be sorry. I would love to see 1 single person who hasn't had a bad experience with the Costco CAX30, just 1, it's the same song and dance with everyone who buys it. Absolute garbage.
Ever notice when you post about it, it isn't even a listed product you can chose for the description. Coincidence? I think not.
