[FS#1252] No IP Assigned to Interface with QMI on Quectel EC-25A

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Thu Nov 11 03:46:54 PST 2021


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FS#1252 - No IP Assigned to Interface with QMI on Quectel EC-25A
User who did this - Joshua O'Leary (Joshun)

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I am having this issue too with Quectel EC20. Interestingly, in Quectel's official connection manager, they seem to periodically check if the QMI IP address has changed, and if so they reconnect:

https://github.com/kmilo17pet/quectel-cm/blob/2c623ffc8a1a8a7054b695956eb343e37b04727b/main.c#L487


I wonder if this is to work around a bug in modem firmware, or perhaps a quirk with how IP addresses are allocated on certain mobile networks?
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1252#comment10287

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