Comment 45 for bug 1422143

Says fix released for xenial. What was it actually released in? wpa_supplicant? I still have the problem intermittently.

May 16 22:58:18 bryan-Latitude-E6410 kernel: iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
May 16 22:58:19 bryan-Latitude-E6410 kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
May 16 22:58:19 bryan-Latitude-E6410 NetworkManager[690]: <info> [1463453899.0483] device (eno1): state change: unmanaged -> unavailable (reason 'managed') [1
May 16 22:58:19 bryan-Latitude-E6410 kernel: IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready
May 16 22:58:19 bryan-Latitude-E6410 NetworkManager[690]: <info> [1463453899.2606] manager: NetworkManager state is now DISCONNECTED
May 16 22:58:19 bryan-Latitude-E6410 kernel: IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready
May 16 22:58:19 bryan-Latitude-E6410 wpa_supplicant[858]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (none) none
May 16 22:58:19 bryan-Latitude-E6410 wpa_supplicant[858]: dbus: Failed to construct signal
May 16 22:58:19 bryan-Latitude-E6410 NetworkManager[690]: <info> [1463453899.3049] device (wlp3s0): supplicant interface state: starting -> ready
May 16 22:58:19 bryan-Latitude-E6410 NetworkManager[690]: <info> [1463453899.3050] device (wlp3s0): state change: unavailable -> disconnected (reason 'supplic
May 16 22:58:19 bryan-Latitude-E6410 kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
May 16 22:58:20 bryan-Latitude-E6410 acpid[617]: client connected from 8954[0:0]
May 16 22:58:20 bryan-Latitude-E6410 acpid[617]: 1 client rule loaded
May 16 22:58:20 bryan-Latitude-E6410 kernel: dell_wmi: Unknown WMI event type 0x11: 0xffd1

sudo service network-manager restart seems to fix the problem as suggested above.