I use an external usb wifi adapter. For ages I was able to always have the external adapter connect to my home wifi, while the internal wifi ran the astroberry hotspot. (I find it useful to have both, in case I need to troubleshoot something).

In the past couple of months, however, the adapters get assigned differently at bootup sometimes. I have to stop and check which is which, change the interfaces' priorities if needed and reboot (hoping, of course, the adapters don't flip-flop again). This is not associated with changing which port things are plugged in to, as far as I know.

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