Skip to main content
Warum O2
Warenkorb
Service

Hi,

I seen earlier posts here that it was possible to avoid CGNAT and have a public IP associated to your account.

This would be great for me as I am hoping to use one of my SIMs as a backup internet connection, and I run VPNs over this, which CGNAT is causing problems with.

I was able to call customer support and get this added for the €50 fee. I was advised that it would be active immediately, but unfortunately it’s not working for me - my router is still being assigned a 10.x.x.x IP address.

I was not advised to change the APN to “netpublic”, however I have tried with and without this change and I still get a 10.x IP.

Is someone from o2 able to help with this?

Many thanks!

@fofusion what kind of router you exactly use?
Is 5G SA activated at the sim card? If yes, APN netpublic dont work.


Hi Joe,

Thanks for the quick reply.

I’m using a GLi-Net GL-X3000 and it appears to be in 5G NSA mode, yet still getting this 10.x address

 


@fofusion Configuration looks good. 
Have an o2 moderator confirm here that a public IPv4 has really been booked correctly.

But one question I have. What options you get, than you open the menu what I marked?

 


Thanks for confirming :)

 

The dropdown has some default values here. Not sure what that these are. Basically, you have to override this with typing “netpublic”

 

Interestingly, I did see in the advanced options, the ability to select specific bands (I currently have this band masking disabled):

 

I ticked one as an example:

Is there a compatibility issue with 5G SA bands and the "netpublic” APN? I could try it with all LTE/5G NSA bands enabled, and all the 5G SA bands disabled if you think there’s value in that?

Thanks again, appreciate your help!


@fofusion for testing please deactivate complete 5G, activate APN netpublic and reboot the device. Check than again if you get a public IPv4 range 46.x.x.x


I think perhaps it might be an account-level issue - still not working:

 


@fofusion one contract mit Multicard or contracts with different mobile numbers?


It’s one contract (O2 Mobile L Boost) that I have 3 SIMs for (one for my phone, one for my tablet and this SIM for my router). I’m wondering if perhaps it’s been assigned to the wrong SIM. I’ll try installing the other SIMs to see if it makes a difference.


As expected, it looks like it’s been applied to the wrong SIM (my phone SIM):

 

Is there someone from o2 who can help?

Thanks!


@fofusion At what day you exactly order the public IPv4 over the hotline?


Hi Joe,

I placed the order yesterday afternoon around 1730 I believe and was told it was available immediately.

Do you know if it’s something that will get applied to all SIMs eventually or if it only gets applied to one?

I only need it on the router SIM. If it was on the Tablet SIM then I would just swap them over, but my phone SIM obviously has my mobile number on it that I use.

So, I guess I need someone at o2 to apply it to the Router SIM, alternatively, wait for it to apply to all 3 of them automatically?

Thanks again!


Hi @fofusion 

Welcoome to our Community \o/ 

Joe Doe had the right instinct, the public IPv4 address was activated on the wrong SIM, but that's not an issue, we can change that with three clicks for free. If you can tell us the last three digits of the SIM card number you are using in the router, we can activate the netpublic APN on this SIM card.  Brief explanation: If you activate the public IPv4 for your multicards, this applies to ALL multicards, but if you use several datacards, the service will only be activated on one datacard at a time and each change is subject to a charge  

Regards

Matze 


Hi Matze,

Thanks for your reply.

The last 3 digits of the Router SIM is 977.

I don’t have any need for it to be activated on any of the other SIMs, so just the router SIM is fine.

Many thanks!


@fofusion 

Systems says “Change made to ‘public IPv4 address’. Done ✅

Now please insert the router SIM into the device and test whether it works now as planned 😄

Cheers mate

Matze


Working great now, thanks Matze.

Thanks Joe also, really appreciate your help!


Hello @fofusion,
I am very pleased that everything worked out. If we can help you any further, please get in touch with us again.🤗
Kind regards, Bianca


Deine Antwort