Hi  @David-TP ,

thanks for your reply. My carrier is o2 in Germany, and the model is the AVM Fritz!Box 6890 LTE V2 (https://en.avm.de/products/fritzbox/fritzbox-6890-lte/). And yes, I can consistently reproduce it. The SIM works flawlessly in the Fritzbox, but won't get a public IP in the Deco. So I assume there is no known issue of the Deco X50-5G with custom APNs in that regard?

All the best

ratze

Hi @David-TP ,

thanks for getting back, I already replied to your e-mail.

After spending two days trying to convince the router to give me a public IP address by deleting profiles, restarting, resetting etc., I finally bought myself a 5G router from a different brand, which worked out of the box with my custom APN and a public IP address, just like my previous one before I tried the Deco.

Thanks for the effort and trying to help. Since I just want to use the hardware, I opted for sending back the Deco and going with the new hardware.

Cheers

ratze

Even tho Ratze has chosen to just switch to another brand, i wonder whether the tech team came up with a solution.

Im trying to get a public IP with O2 as provider and the APN settings are correct in my custom profile.

However the X50-5G still seems to use the standard settings which are saved on the device.

Ive also checked the SIM in my smartphone and then everything is fine. Only the TP X50-5G has the issue.

  @Markito Ah, good you're bringing this up again. The problem lay actually elsewhere, and I had barely any chance to know of it. After providing a public IP address initially, my new router gave me the exact same trouble, only private IPs. However, based on a hunch, I tried switching the router's bands from 5G-SA to 5G-NSA, and voilà—public IP address is being provided. The problem lies with o2 in Germany. They sell you a public IP address, which works fine with 4G and their 'default' 5G-NSA, which is just a combination of 4G channels. But their ‘5G Plus’ option, which is the actual 5G with all the improvements in speed and latency that 5G is famous for, doesn't work with a public IP address. That's why my previous 4G router worked so flawlessly, and the X50-5G wasn't the culprit.

So, if you have their 5G+/Plus option enabled, you could try setting your router to 5G-NSA, live with the disadvantages, but still use your public IP address. Someone from the official German o2 support promised to ask their tech division for an explanation, but hasn't gotten back in almost six months. They've also explained publicly on their forums 1 1/2 years ago that they don't have any plans changing that.