Hi Andrew,
I think a valueable feature with NetworkManager + Wi-Fi + wpa_supplicant is that MAC address options. I tried to explain how that works here: https://blogs.gnome.org/thaller/2016/08/26/mac-address-spoofing-in-networkmanager-1-4-0/ and some ideas here: https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/nm-conf.d/30-anon.conf?id=b936ccd2837199d5851388122c2e44951bf20012 Basically, NM changes the current MAC address of the Wi-Fi device under the hood. But only while scanning, early when activation starts, or after deactivation. Grep the sources for nm_device_hw_addr_set() and nm_device_hw_addr_set_cloned(). There were/are a few issues with supplicant, where it would cope badly with NM externally changing the MAC address: E.g. https://w1.fi/cgit/hostap/commit/?id=290834df69556b903b49f2a45671cc62b44f13bb http://lists.infradead.org/pipermail/hostap/2017-October/038035.html Also, some drivers don't support changing the MAC address at all. In the past, NM would fail badly in that case, nowadays, it should just log a warning and otherwise work fine. Anyway, how does iwd cope with NM externally changing the MAC address (via netlink)? Otherwise, could/does iwd provide a SetMacAddress() D-Bus method? I don't think iwd should contain the logic for selecting a MAC address. NM knows which profile is active, and it knows how to generate the desired MAC address. iwd could contain some MAC address randomization schemes, I don't care as long as there is a way for NM to explicitly set the desired MAC address. best, Thomas
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