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I'm doing several builds and testing different devices and this issue is persistent on the x86_64 build for the PC Engine APU hardware.<br>
(I did not encounter it on the Espressobin v7 hardware.)<br>
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I have several modems but I am testing with a Sierra Wireless MC7455 which seems to be a popular one that is also raw-ip only.<br>
As a quick-fix bringing the interface down and back up where the /lib/netifd/proto/qmi.sh script attempts to change-over to raw-ip seems to work but I'm not certain if its "the right way" to fix this issue. It seems to take a while so I think it's retrying
later and working the second time.<br>
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<span> echo "Device does not support 802.3 mode. Informing driver of raw-ip only for $ifname .."<br>
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<div> ifconfig $ifname down<br>
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<div> echo "Y" > /sys/class/net/$ifname/qmi/raw_ip<br>
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<span> ifconfig $ifname up</span><br>
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Some snippets from the kernel log:</div>
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<span>[ 8.744638] qmi_wwan 1-1.3:1.8: cdc-wdm0: USB WDM device<br>
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<div>[ 8.751778] qmi_wwan 1-1.3:1.8 wwan0: register 'qmi_wwan' at usb-0000:00:13.0-1.3, WWAN/QMI device, fa:8c:eb:d2:d5:df<br>
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<div>[ 8.765196] qmi_wwan 1-1.3:1.10: cdc-wdm1: USB WDM device<br>
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<div>[ 8.772501] qmi_wwan 1-1.3:1.10 wwan1: register 'qmi_wwan' at usb-0000:00:13.0-1.3, WWAN/QMI device, fa:8c:eb:d2:d5:df<br>
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<div>[ 8.784460] usbcore: registered new interface driver qmi_wwan<br>
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<div>[ 8.793076] usbcore: registered new interface driver rndis_host<br>
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<div>[ 8.800987] usbcore: registered new interface driver sierra<br>
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<span>[ 8.806989] usbserial: USB Serial support registered for Sierra USB modem</span></div>
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[ 13.569617] qmi_wwan 1-1.3:1.8 wwan0: Cannot change a running device</div>
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