Spam by siblings scan result

[NAZARENKO Roman]

Hi all.

On system startup (not all wireless devices are configured) NM starts 
periodic scans on all of interfaces. It creates a load on the dbus and 
NM, some services are failing with timeout because of it.
Usually, it happens when a system has several virtual interfaces on one 
physical chip - wpa_supplicant sends scan results to all siblings.
For example, if the system has 3 virtual interfaces, NM starts 3 scans 
and receives 3 scan results on each. So NM receives 9 scan results (150 
AP in each of them, mainly with the same APs since all scans are done on 
one chip), see diagram in MR description [1].
In another project it even worse since there 4 virtual interfaces - 16 
scan results.

It definitely works the wrong way. If you want to avoid useless scans 
you could just cache scan results internally in a daemon. And send it on 
direct request, but not sibling one.
Is there any way to disable this "siblings forwarding" feature?

Links:
[1] - 
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2036

-- 
BR
Roman Nazarenko