No name resolution on Verizon

Raspberry Pi Base HATs 3G/4G&LTE Base HAT
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1

Hardware:

  • Module model (e.g. Quectel EC25-A):
  • Raspberry Pi model (Pi 5):
  • Connection method: USB
  • Power supply good

System:

  • OS: Raspberry Pi OS

SIM & Connectivity:

  • SIM card type (Verizon):
  • APN configured: vswinternet
  • Connection protocol: ECM

Modem Recognition Check:

  • lsusb output: QWS unit found ID:2c7c:0125

LED Status:

  • PWR LED (red): on
  • SGNL LED (blue): occasional blinking

AT Command Outputs:

  • AT+CREG? result:
  • AT+CPIN? result:
  • AT+CSQ result:

good SNR and carrier READY

Issue:
The modem is connecting the the Verizon wireless service, but address resolution (DNS) is not functional. Directed ping through wlan0 work, directed pins through usb0 do not.

Also the usb0 does not appear in the NetworkManager list.

Please advise…

Full error output:

What you have already tried:
* route -n
* individual directed pings

acf7e6e5-b14c-43e9-9454-713e40c6ca26
acf7e6e5-b14c-43e9-9454-713e40c6ca261920×1440 658 KB

2

Hi @laputa,
From the screenshot, the Raspberry Pi appears to have received an IP address on usb0 but traffic through usb0 is not reaching the internet. Since sixfab.com is resolving to an IP address, this does not look like a DNS-only issue. It may be related to the APN, Verizon device approval or the cellular data route.

Please first check the APN. You mentioned:

vswinternet

For Verizon, please confirm if the correct APN should be:

vzwinternet

A small typo in the APN can allow the modem to register but prevent proper data connectivity.

Also, please contact Verizon Customer Care and confirm whether the modem IMEI is registered and approved in their system. Verizon may require the IMEI to be added or approved before full data service is allowed.

After checking the APN and IMEI approval, please share the following outputs:

ip addr show usb0
ip route
cat /etc/resolv.conf
ping -I usb0 -c 5 8.8.8.8
ping -I usb0 -c 5 1.1.1.1

Please also share these AT command outputs:

AT+CPIN?
AT+CSQ
AT+CREG?
AT+CEREG?
AT+COPS?
AT+CGDCONT?
AT+CGACT?
AT+CGPADDR

Regarding usb0 not appearing in NetworkManager, this can be normal in ECM mode if the interface is created by the modem driver but not managed by NetworkManager.

Once we have the requested outputs, we will be able to review further and advise the next steps.

3

APN was correct… thanks

ip addr show usb0 - good shows 192.168.255.25/24

ip route

20260610_165040
20260610_1650401920×1440 626 KB

cat /etc/resolv.conf

search lan

nameserver 192.168.255.1

nameserver 10.21.0.1

ping -I usb0 -c 5 8.8.8.8 - destination net unreachable

ping -I usb0 -c 5 1.1.1.1 - destination net unreachable

4

Here is the rest for your review: