mqtt_simple sample gets error -2 in getaddrinfo

[tomtomtom2401]

Hello,

We have developed our own module based on the nrf9160 DK and want to use it to send data to a MQTT broker. A few days ago on the dev-kit everything worked fine, now the new PCBs have arrived and we get this error in the mqtt_simple sample (as well as in our own code, but in a little different format):

 *** Booting Zephyr OS build v3.2.99-ncs1 ***                                      
[00:00:00.504,638] <inf> mqtt_simple: The MQTT simple sample started               
[00:00:00.504,699] <inf> mqtt_simple: Disabling PSM and eDRX                              
[00:00:00.505,401] <inf> mqtt_simple: LTE Link Connecting...                              
[00:00:09.277,618] <inf> mqtt_simple: LTE Link Connected!                                 
[00:00:09.277,862] <err> mqtt_simple: getaddrinfo failed: -2                              
[00:00:09.277,893] <err> mqtt_simple: Failed to initialize broker connection              
[00:00:09.277,893] <err> mqtt_simple: client_init: -10   

We just added the following config lines to use NB-IoT in the sample:

CONFIG_LTE_NETWORK_MODE_NBIOT=y
CONFIG_LTE_MODE_PREFERENCE_NBIOT=y

When using the IP address of the moquitto test server, it works perfectly fine.

*** Booting Zephyr OS build v3.2.99-ncs1 ***                                      
[00:00:00.568,603] <inf> mqtt_simple: The MQTT simple sample started                      
[00:00:00.568,664] <inf> mqtt_simple: Disabling PSM and eDRX                              
[00:00:00.569,366] <inf> mqtt_simple: LTE Link Connecting...                              
[00:00:11.186,523] <inf> mqtt_simple: LTE Link Connected!                                 
[00:00:11.186,950] <inf> mqtt_simple: IPv4 Address found 91.121.93.94                     
[00:00:11.187,438] <dbg> mqtt_simple: client_id_get: client_id = nrf-2EB11F7FD373E99C     
[00:00:11.598,114] <inf> mqtt_simple: MQTT client connected                               
[00:00:11.598,144] <inf> mqtt_simple: Subscribing to: my/subscribe/topic len 22       
[00:00:11.746,185] <inf> mqtt_simple: SUBACK packet id: 1234                              
[00:06:48.615,112] <inf> mqtt_simple: MQTT PUBLISH result=0 len=15                        
[00:06:48.615,203] <inf> mqtt_simple: Received: test with ip address                           
[00:06:48.615,783] <inf> mqtt_simple: Publishing: test with ip address                         
[00:06:48.615,814] <inf> mqtt_simple: to topic: my/publish/topic len: 20              
[00:06:48.761,352] <inf> mqtt_simple: PUBACK packet id: 39802 

Has anybody an idea? 

We are using the NCS v2.2.0 with the toolchain 2.2.0 (but tried the 2.1.0 as well, as we used with the dev-kit), modem firmware is 1.2.3

Edit: I forgot to add: when using the same code on the dev-kit, it works also fine with the IP Address and the URL. Modem firmware is here also 1.2.3 - thats the reason we choose 1.2.3 instead of 1.3.3. We also use the same SIM card to prevent any errors from the provider side (bad DNS, APN, whatever...)

Thank you!

BR Thomas

[Hakon]

Hello,

which SIM card are you using?

[tomtomtom2401]

Hello,

We are using a m2m SIM from company "drei" from Austria. I've used the very same SIM card in the dev kit and in our module to exclude any errors from this side.
In the meantime, I tried to set the DNS manually (like in thread), but it only works randomly and only once after flashing the modem firmware. Then it looks like its running into a timeout and a watchdog restarts the module.

BR Thomas

[Achim Kraus]

I'm really wondering. I had never too much trouble with the nRF9160 and DNS. Only on some "fast starts" I need that retry. I use 1.3.1, 1.3.2 and 1.3.3

Enable the trace and NB-IoT should not change the DNS, at least I didn't made that experience.

I guess, you will need to "ping" someone from Nordic to have an modem expert having an look at your traces.

The only left hint would be, to try a "AT%XFACTORYRESET=0" of the config.

[Hakon]

Is this a standard release of the 1.2.3 mfw? Or is it a pre-release or something else? I get some errors when I try to decode the trace file.

[tomtomtom2401]

It is the standard release of 1.2.3 and 1.3.3 which i downloaded from https://www.nordicsemi.com/Products/Development-hardware/nrf9160-dk/download

I've just seen the release of the 1.3.4 - should I give it a try?

[tomtomtom2401]

I have found this similar issue  nrf9160 NB-IoT DNS failure 

Do you have any thoughts on this? I don't find any config option for PCO/ePCO in Kconfig but when trying to set it via the AT command (AT%XEPCO=0) it doesn't work either.

[tomtomtom2401]

After a lot of reading we found a connection between the DNS lookup and the PDN setting of the modem - please correct me if I'm wrong.

We found one difference on the provider side (with the same SIM used): the "PDN max BW UL" and  "PDN max BW DL" is higher. (8000000/8000000 on the devkit to 50000000/150000000)
For my understanding this is the max. bandwidth for uplink and downlink - so it should not be the cause of the DNS problem?

[Achim Kraus]

> "PDN max BW UL" and  "PDN max BW DL" is higher. (8000000/8000000 on the devkit to 50000000/150000000)

Do you operate both, DK & other device, at the same location?

The "trace_with_dns.pcapng" shows in my opinion several "connects", what may explain the different ip-addresses and why the response doesn't reach the device. That may be caused by a instable network connection.

With newer firmware & sdk, you may also log the PDN callbacks (I guess that's changing), read the modem status with "AT%XMONITOR",  "AT+CGDCONT?" and "AT+CEINFO?". That would help to see, if the PDN context is changing and what signal conditions the device has.

With 1.2.3 you may check, what's available.

I would remove the call to "nrf_setdnsaddr", add some of the additional AT commands, reset the device config once with "AT%XFACTORYRESET=0" and then let the device run for a couple of minutes. Sometimes a first stable connect takes 1 or 2 minutes.

[tomtomtom2401]

Yes, they are both on my desk.

By the way: with the nrf_setdnsaddr the device reboots after a while. but I think I stopped the trace short before rebooting.

I have done a trace with the device trying to get the dns address every 10s and the AT commands described as described:

mqtt_simple_dns_request_redo.bin

mqtt_simple_dns_request_redo.pcapng

and the log output:

Fullscreen capture_2023-02-01_0900.txt Download

*** Booting Zephyr OS build v3.2.99-ncs1 ***
[00:00:00.604,675] <inf> nrf_modem_lib_trace: Trace thread ready
[00:00:00.606,140] <inf> nrf_modem_lib_trace: Trace level override: 2
[00:00:00.611,389] <inf> mqtt_simple: The MQTT simple sample started
[00:00:00.639,465] <inf> mqtt_simple: Modem response / reset: OK

[00:00:00.639,465] <inf> mqtt_simple: Disabling PSM and eDRX
[00:00:00.640,991] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 4
OK

[00:00:00.641,479] <inf> mqtt_simple: Modem response / CGDCONT: OK

[00:00:00.642,028] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,0,0,255,127
OK

[00:00:00.642,059] <inf> mqtt_simple: LTE Link Connecting...
[00:00:12.160,125] <inf> mqtt_simple: LTE Link Connected!
[00:00:12.160,949] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"","","23205","7615",9,3,"018B7DDE",292,1401,53,41,"","11100000","11100000","01010100"
OK

[00:00:12.161,468] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:00:12.162,017] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,C,8,1,-88,16
OK

[00:00:12.162,292] <inf> mqtt_simple: getaddrinfo result: -2
[00:00:22.163,208] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,46,"","11100000","11100000","01010100"
OK

[00:00:22.163,879] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:00:22.164,550] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,C,8,1,-87,21
OK

[00:00:22.164,886] <inf> mqtt_simple: getaddrinfo result: -2
[00:00:32.174,163] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:00:32.174,743] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:00:32.175,476] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:00:32.175,811] <inf> mqtt_simple: getaddrinfo result: -2
[00:00:42.185,119] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,40,"","11100000","11100000","01010100"
OK

[00:00:42.185,699] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:00:42.186,248] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,15
OK

[00:00:42.186,584] <inf> mqtt_simple: getaddrinfo result: -2
[00:00:52.195,892] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:00:52.196,441] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:00:52.196,960] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:00:52.197,326] <inf> mqtt_simple: getaddrinfo result: -2
[00:01:02.206,604] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:01:02.207,336] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:01:02.207,916] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:01:02.208,221] <inf> mqtt_simple: getaddrinfo result: -2
[00:01:12.217,498] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:01:12.218,048] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:01:12.218,597] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:01:12.218,933] <inf> mqtt_simple: getaddrinfo result: -2
[00:01:22.219,818] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,41,"","11100000","11100000","01010100"
OK

[00:01:22.220,520] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:01:22.221,099] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,16
OK

[00:01:22.221,405] <inf> mqtt_simple: getaddrinfo result: -2
[00:01:32.230,743] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,42,"","11100000","11100000","01010100"
OK

[00:01:32.231,292] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:01:32.231,872] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,17
OK

[00:01:32.232,238] <inf> mqtt_simple: getaddrinfo result: -2
[00:01:42.241,516] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,42,"","11100000","11100000","01010100"
OK

[00:01:42.242,095] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:01:42.242,614] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,17
OK

[00:01:42.242,980] <inf> mqtt_simple: getaddrinfo result: -2
[00:01:52.252,258] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,41,"","11100000","11100000","01010100"
OK

[00:01:52.252,838] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:01:52.253,570] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,16
OK

[00:01:52.253,906] <inf> mqtt_simple: getaddrinfo result: -2
[00:02:02.263,214] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,43,"","11100000","11100000","01010100"
OK

[00:02:02.263,824] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:02:02.264,373] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,18
OK

[00:02:02.264,739] <inf> mqtt_simple: getaddrinfo result: -2
[00:02:12.274,047] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,38,"","11100000","11100000","01010100"
OK

[00:02:12.274,597] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:02:12.275,146] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,13
OK

[00:02:12.275,512] <inf> mqtt_simple: getaddrinfo result: -2
[00:02:22.284,820] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:02:22.285,369] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:02:22.285,919] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:02:22.286,285] <inf> mqtt_simple: getaddrinfo result: -2
[00:02:32.295,593] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,43,"","11100000","11100000","01010100"
OK

[00:02:32.296,142] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:02:32.296,722] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,18
OK

[00:02:32.297,058] <inf> mqtt_simple: getaddrinfo result: -2
[00:02:42.306,335] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:02:42.306,915] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:02:42.307,464] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:02:42.307,800] <inf> mqtt_simple: getaddrinfo result: -2
[00:02:52.317,047] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:02:52.317,626] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:02:52.318,145] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:02:52.318,511] <inf> mqtt_simple: getaddrinfo result: -2
[00:03:02.327,789] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:03:02.328,338] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:03:02.328,887] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:03:02.329,254] <inf> mqtt_simple: getaddrinfo result: -2
[00:03:12.330,261] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:03:12.330,841] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:03:12.331,420] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:03:12.331,756] <inf> mqtt_simple: getaddrinfo result: -2
[00:03:22.341,094] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:03:22.341,644] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:03:22.342,376] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:03:22.342,712] <inf> mqtt_simple: getaddrinfo result: -2
[00:03:32.352,050] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,43,"","11100000","11100000","01010100"
OK

[00:03:32.352,600] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:03:32.353,179] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,18
OK

[00:03:32.353,546] <inf> mqtt_simple: getaddrinfo result: -2
[00:03:42.362,823] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,39,"","11100000","11100000","01010100"
OK

[00:03:42.363,403] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:03:42.363,922] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,14
OK

[00:03:42.364,288] <inf> mqtt_simple: getaddrinfo result: -2
[00:03:52.373,565] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,40,"","11100000","11100000","01010100"
OK

[00:03:52.374,145] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:03:52.374,877] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,15
OK

[00:03:52.375,213] <inf> mqtt_simple: getaddrinfo result: -2
[00:04:02.384,521] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,40,"","11100000","11100000","01010100"
OK

[00:04:02.385,131] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:04:02.385,681] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,15
OK

[00:04:02.386,047] <inf> mqtt_simple: getaddrinfo result: -2
[00:04:12.395,355] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,38,"","11100000","11100000","01010100"
OK

[00:04:12.395,904] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:04:12.396,453] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,13
OK

[00:04:12.396,820] <inf> mqtt_simple: getaddrinfo result: -2
[00:04:22.406,127] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:04:22.406,677] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:04:22.407,409] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:04:22.407,745] <inf> mqtt_simple: getaddrinfo result: -2
[00:04:32.417,083] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:04:32.417,633] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:04:32.418,182] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:04:32.418,548] <inf> mqtt_simple: getaddrinfo result: -2
[00:04:42.427,795] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:04:42.428,375] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:04:42.428,924] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:04:42.429,260] <inf> mqtt_simple: getaddrinfo result: -2
[00:04:52.438,507] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:04:52.439,086] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:04:52.439,605] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:04:52.439,971] <inf> mqtt_simple: getaddrinfo result: -2
[00:05:02.440,979] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:05:02.441,558] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:05:02.442,138] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:05:02.442,474] <inf> mqtt_simple: getaddrinfo result: -2
[00:05:12.451,812] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:05:12.452,362] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:05:12.452,911] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:05:12.453,277] <inf> mqtt_simple: getaddrinfo result: -2
[00:05:22.462,585] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,39,"","11100000","11100000","01010100"
OK

[00:05:22.463,134] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:05:22.463,684] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,14
OK

[00:05:22.464,050] <inf> mqtt_simple: getaddrinfo result: -2
[00:05:32.473,358] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,40,"","11100000","11100000","01010100"
OK

[00:05:32.473,907] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:05:32.474,487] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,15
OK

[00:05:32.474,853] <inf> mqtt_simple: getaddrinfo result: -2
[00:05:42.484,130] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:05:42.484,710] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:05:42.485,229] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:05:42.485,595] <inf> mqtt_simple: getaddrinfo result: -2
[00:05:52.494,873] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,41,"","11100000","11100000","01010100"
OK

[00:05:52.495,452] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:05:52.496,185] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,16
OK

[00:05:52.496,520] <inf> mqtt_simple: getaddrinfo result: -2
[00:06:02.505,828] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:06:02.506,439] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:06:02.506,988] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:06:02.507,354] <inf> mqtt_simple: getaddrinfo result: -2
[00:06:12.516,662] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:06:12.517,211] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:06:12.517,944] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:06:12.518,280] <inf> mqtt_simple: getaddrinfo result: -2
[00:06:22.527,618] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:06:22.528,167] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:06:22.528,717] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:06:22.529,083] <inf> mqtt_simple: getaddrinfo result: -2
[00:06:32.538,391] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,41,"","11100000","11100000","01010100"
OK

[00:06:32.538,940] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:06:32.539,489] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,16
OK

[00:06:32.539,855] <inf> mqtt_simple: getaddrinfo result: -2
[00:06:42.549,102] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:06:42.549,682] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:06:42.550,415] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:06:42.550,750] <inf> mqtt_simple: getaddrinfo result: -2
[00:06:52.551,788] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:06:52.552,337] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:06:52.552,947] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:06:52.553,283] <inf> mqtt_simple: getaddrinfo result: -2
[00:07:02.562,591] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,41,"","11100000","11100000","01010100"
OK

[00:07:02.563,201] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:07:02.563,751] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,16
OK

[00:07:02.564,117] <inf> mqtt_simple: getaddrinfo result: -2
[00:07:12.573,425] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,41,"","11100000","11100000","01010100"
OK

[00:07:12.573,974] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:07:12.574,523] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,16
OK

[00:07:12.574,890] <inf> mqtt_simple: getaddrinfo result: -2
[00:07:22.584,197] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:07:22.584,747] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:07:22.585,479] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:07:22.585,815] <inf> mqtt_simple: getaddrinfo result: -2
[00:07:32.595,153] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,41,"","11100000","11100000","01010100"
OK

[00:07:32.595,733] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:07:32.596,282] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,16
OK

[00:07:32.596,649] <inf> mqtt_simple: getaddrinfo result: -2
[00:07:42.605,926] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,41,"","11100000","11100000","01010100"
OK

[00:07:42.606,506] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:07:42.607,025] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,16
OK

[00:07:42.607,391] <inf> mqtt_simple: getaddrinfo result: -2
[00:07:52.616,668] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:07:52.617,248] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:07:52.617,980] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:07:52.618,316] <inf> mqtt_simple: getaddrinfo result: -2
[00:08:02.627,624] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:08:02.628,234] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:08:02.628,784] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:08:02.629,150] <inf> mqtt_simple: getaddrinfo result: -2
[00:08:12.638,458] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,40,"","11100000","11100000","01010100"
OK

[00:08:12.639,007] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:08:12.639,739] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,15
OK

[00:08:12.640,075] <inf> mqtt_simple: getaddrinfo result: -2
[00:08:22.649,414] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,42,"","11100000","11100000","01010100"
OK

[00:08:22.649,963] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:08:22.650,512] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,17
OK

[00:08:22.650,878] <inf> mqtt_simple: getaddrinfo result: -2
[00:08:32.660,156] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,43,"","11100000","11100000","01010100"
OK

[00:08:32.660,705] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:08:32.661,285] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,18
OK

[00:08:32.661,621] <inf> mqtt_simple: getaddrinfo result: -2
[00:08:42.662,597] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,40,"","11100000","11100000","01010100"
OK

[00:08:42.663,177] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:08:42.663,757] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,15
OK

[00:08:42.664,093] <inf> mqtt_simple: getaddrinfo result: -2
[00:08:52.673,370] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,42,"","11100000","11100000","01010100"
OK

[00:08:52.673,950] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:08:52.674,499] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,17
OK

[00:08:52.674,865] <inf> mqtt_simple: getaddrinfo result: -2
[00:09:02.684,143] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,43,"","11100000","11100000","01010100"
OK

[00:09:02.684,753] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:09:02.685,302] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,18
OK

[00:09:02.685,668] <inf> mqtt_simple: getaddrinfo result: -2
[00:09:12.694,976] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,44,"","11100000","11100000","01010100"
OK

[00:09:12.695,526] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:09:12.696,075] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,19
OK

[00:09:12.696,441] <inf> mqtt_simple: getaddrinfo result: -2
[00:09:22.705,749] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,44,"","11100000","11100000","01010100"
OK

[00:09:22.706,298] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:09:22.706,848] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,19
OK

[00:09:22.707,214] <inf> mqtt_simple: getaddrinfo result: -2
[00:09:32.716,522] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,55,41,"","11100000","11100000","01010100"
OK

[00:09:32.717,071] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:09:32.717,651] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-86,16
OK

[00:09:32.718,017] <inf> mqtt_simple: getaddrinfo result: -2
[00:09:42.727,294] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:09:42.727,874] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:09:42.728,393] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:09:42.728,759] <inf> mqtt_simple: getaddrinfo result: -2
[00:09:52.738,037] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,42,"","11100000","11100000","01010100"
OK

[00:09:52.738,616] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:09:52.739,349] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,17
OK

[00:09:52.739,685] <inf> mqtt_simple: getaddrinfo result: -2
[00:10:02.749,023] <inf> mqtt_simple: Modem response / monitor: %XMONITOR: 1,"3AT","3AT","23205","7615",9,3,"018B7DDE",292,1401,54,39,"","11100000","11100000","01010100"
OK

[00:10:02.749,572] <inf> mqtt_simple: Modem response / CGDCONT: +CGDCONT: 0,"IP","m2m.drei.at","10.71.192.243",0,0
OK

[00:10:02.750,122] <inf> mqtt_simple: Modem response / CEINFO: +CEINFO: 0,1,I,8,2,-87,14
OK

[00:10:02.750,488] <inf> mqtt_simple: getaddrinfo result: -2
[00:10:12.750,579] <err> mqtt_simple: getaddrinfo failed: -2
[00:10:12.750,610] <err> mqtt_simple: Failed to initialize broker connection
[00:10:12.750,640] <err> mqtt_simple: client_init: -10
uart:~$

I will do the same with the devkit, but the trace is not getting logged at the moment. I will upload as soon as it works...

[Achim Kraus]

Hm, that log shows, that the device ip-address is stable and the signal conditions are well.

Really mystic. Once you have the capture with the DNS requests, it will be very interesting to see, what that shows (FMPOV, only the one of the trace collector preview is required).

[tomtomtom2401]

The problem for the trace was: I adapted the boardfile for UART1 (trace output) for our board just for fast tests and haven't added a new custom board. So here is the trace output incl. a mqtt test message:

mqtt_simple_dns_request_redo_devkit.bin

mqtt_simple_dns_request_redo_devkit.pcapng

For my (not that high experienced) eyes: we see some DNS requests with a source and a destination, and a response from this DNS server (213.94.78.16). But from where does the device know this DNS server?

Btw.: can the board definition cause any problem in this case regarding the DNS/address resolution? Our hardware is basically the devkit but with minor changes to the GPIOs and the debugger part has been removed - HF part, etc. is the same...

And the hardware revision is different from the devkit and nowhere mentioned: BQA vs. B1A

BR Thomas

[Achim Kraus]

> nslookup 213.94.78.16

> 16.78.94.213.in-addr.arpa    name = pdnsvip1.drei.com.

Looks like the DNS of your provider.

> But from where does the device know this DNS server?

Maybe AT+CGCONTRDP=0 helps to see, if that is assigned to the device by your provider.