I can confirm that this also happens when toggling the radio killswitch on my x230 with Xenial:
Jul 26 09:48:19 Host NetworkManager[2979]: <info> [1469540899.8669] manager: WiFi now enabled by radio killswitch Jul 26 09:48:19 Host kernel: [71025.599893] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready Jul 26 09:48:19 Host wpa_supplicant[3344]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (none) none Jul 26 09:48:19 Host wpa_supplicant[3344]: dbus: Failed to construct signal Jul 26 09:48:19 Host NetworkManager[2979]: <info> [1469540899.9049] device (wlan0): supplicant interface state: starting -> ready Jul 26 09:48:19 Host NetworkManager[2979]: <info> [1469540899.9050] device (wlan0): state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42] Jul 26 09:48:19 Host kernel: [71025.639368] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
I can confirm that this also happens when toggling the radio killswitch on my x230 with Xenial:
Jul 26 09:48:19 Host NetworkManager[ 2979]: <info> [1469540899.8669] manager: WiFi now enabled by radio killswitch NETDEV_ UP): wlan0: link is not ready 3344]: dbus: wpa_dbus_ get_object_ properties: failed to get object properties: (none) none 3344]: dbus: Failed to construct signal 2979]: <info> [1469540899.9049] device (wlan0): supplicant interface state: starting -> ready 2979]: <info> [1469540899.9050] device (wlan0): state change: unavailable -> disconnected (reason 'supplicant- available' ) [20 30 42] NETDEV_ UP): wlan0: link is not ready
Jul 26 09:48:19 Host kernel: [71025.599893] IPv6: ADDRCONF(
Jul 26 09:48:19 Host wpa_supplicant[
Jul 26 09:48:19 Host wpa_supplicant[
Jul 26 09:48:19 Host NetworkManager[
Jul 26 09:48:19 Host NetworkManager[
Jul 26 09:48:19 Host kernel: [71025.639368] IPv6: ADDRCONF(