Setting static IP addresses via connman ethernet provisioning mechanism does not allow manual IP adress change. Test case: Image is core-image-sato. On a qemu machine, change the manual IP address to a different one, mannually assigned, using the connman-gnome interface. Expected result does not happen, meaning the new assigned address is not used.
If ip address is provisioned via .config file, the corresponding service (ethernet in this case) becomes immutable i.e., it cannot be modified via dbus. If some changes need to be done afterwards for a provisioned service, like changing ip address etc., then one option is to rewrite the provisioning file. ConnMan will monitor these .config files and apply the changes to the service.
Same test case as YB4832. *** This bug has been marked as a duplicate of bug 4832 ***