wpa_supplicant exponse properties of the interface that you can read using dbus command such as. Now if the property is empy you should just expose as empty and not fail as it is in the code.
sudo dbus-send --system --print-reply --dest=fi.w1.wpa_supplicant1 /fi/w1/wpa_supplicant1/Interfaces/1 org.freedesktop.DBus.Properties.GetAll string:fi.w1.wpa_supplicant1.Interface This kind of interface is used by other network services aka connman. I have tested on ubuntu-core and ubuntu 18.04 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to wpa in Ubuntu. https://bugs.launchpad.net/bugs/1899262 Title: Broken dbus GetAll message to wpa supplicant interface properties Status in wpa package in Ubuntu: New Bug description: dbus-send is able to read the properties of interface using GetAll. Those information include interface name, status, encryption method, etc. The regression was introduced when someone try to have the Station attribute supported To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/wpa/+bug/1899262/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp