I have updated a device recently (TRB500) and it is only working with a fixed APN. If I swich to non automatic APN and select one of the APNs that are already configured, it works; but if APN is automatic, it declares that all APNs has been tested without success.
It is a TRB500, and firmware is 7.21.3, latest stable right now.
The behaviour is exactly as I reported in a previous post some time ago. In the overview page you can see that it is correct for a few seconds, and then it restart again the PDP context.
Hello,
I continue making some research about this issue, with the following findings:
The device pings out different IPs when stablishing connection. I have seen pings to 8.8.8.8, 1.1.1.1, 208.67.222.222, 9.9.9.9 and 64.0.64.0
You can find this IPs on a file called operctl. I cannot find this info on the web.
There is an option operctl.dns_list.enabled, that is set to 1 in the file. If you change it to 0, it works!
I don’t know if this can be marked as solved or not, since I don’t know what I am affecting with this variable.
Previous scenario: the mobile connection restart every few seconds, testing all available APNs. If you fix the APN (no auto), then there is no problem.
Finding: If you change enable from 1 to 0 at operctl file, it also works with auto APN, although I don’t know the real effect of this variable
It would be great if you could advise me how to modify this configuration, since I have checked and it existed in previous versions without creating any problem.