X-3000 spurious 'requestSetupDataCall', 'call_end_reason' messages

I have an X-3000 (running 0411release1) that is working well with on Vodafone Greece. However every three or four minutes it sends the following sequence of syslog messages:

Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:13:21:476] call_end_reason_verbose is 210
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:13:21:476] try to requestSetupDataCall 60 second later
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:14:21:527] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:14:21:527] call_end_reason is 1
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:14:21:527] call_end_reason_type is 2
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:14:21:527] call_end_reason_verbose is 210
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:14:21:527] try to requestSetupDataCall 60 second later
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:15:21:582] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:15:21:582] call_end_reason is 1
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:15:21:582] call_end_reason_type is 2
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:15:21:582] call_end_reason_verbose is 210
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:15:21:582] try to requestSetupDataCall 60 second later
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:16:21:648] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:16:21:648] call_end_reason is 1
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:16:21:648] call_end_reason_type is 2
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:16:21:648] call_end_reason_verbose is 210
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:16:21:648] try to requestSetupDataCall 60 second later
Sep 15 19:17:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:17:21:712] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:17:21:712] call_end_reason is 1
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:17:21:712] call_end_reason_type is 2
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:17:21:712] call_end_reason_verbose is 210
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:17:21:712] try to requestSetupDataCall 60 second later
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:18:21:776] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:18:21:777] call_end_reason is 1
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:18:21:777] call_end_reason_type is 2
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:18:21:777] call_end_reason_verbose is 210
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:18:21:777] try to requestSetupDataCall 60 second later
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:19:21:839] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:19:21:839] call_end_reason is 1
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:19:21:839] call_end_reason_type is 2
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:19:21:839] call_end_reason_verbose is 210
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:19:21:839] try to requestSetupDataCall 60 second later
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:20:21:902] requestSetupDataCall QMUXResult = 0x1, QMUXError = 0xe
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:20:21:902] call_end_reason is 1
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:20:21:902] call_end_reason_type is 2
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:20:21:902] call_end_reason_verbose is 210
Sep 15 19:21:21 NerdvanaGW netifd: modem_0001 (31265): [09-15_22:20:21:902] try to requestSetupDataCall 60 second later

However, the 5G connection has not dropped; it remains up and stable. So what is the modem doing that leads to all the messages? And why? And how to stop it?

Thanks
Sean

I got the same on Telenor in Norway when using the APN internet.public (for having an externally visible ip.) After removing the APN setting for that SIM (returning to default APN) and rebooting, these messages stopped.

I’ve been using that APN with a DDNS service to be able to log into my previous router externally. But with the goodcloud service, that’s really not necessary anymore.

sorry
Does your sim card support ipv6?
This is a print that has been failing to request an ipv6 address from the base station, and it does not affect usage

I'm using Vodafone Greece. I've tried a few Google searches but determine if they provide ipv6. I suspect not. Is there a specific ipv6 setting I should disable in order to prevent this?

I have the same problem. What do I need to do?

@Nerdvana @TunnylaneTom
This print does not affect use
It is caused by the sim card not supporting ipv6
Let me see if I can make this print only happen once