Comment 2 for bug 139966

VMWare appears not to be the cause.

Starting the PC this morning from cold NetworkManager has consistently failed to connect to WiFi - in fact I have had to connect a wired connection to get any network connectivity. The workaround described above of restarting NetworkManager(Dispatcher) hasn't solved it. Tried restarting wpasupplicant too but that didn't help.

I noticed from the log files that avahi would get report the correct WiFi DHCP lease being assigned and then immediately drop it because NetworkManager had failed.

NetworkManager: ******************* END **********************************
 dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 2
 dhclient: No DHCPOFFERS received.
 dhclient: Trying recorded lease 10.254.251.52
 avahi-autoipd(eth1)[6213]: A routable address has been configured.
 avahi-autoipd(eth1)[6213]: Callout UNBIND, address 169.254.3.217 on interface eth1
 avahi-autoipd(eth1)[6213]: No longer a routable address configured, restarting probe process.
 avahi-daemon[5696]: Joining mDNS multicast group on interface eth1.IPv4 with address 10.254.251.52.
 avahi-autoipd(eth1)[6213]: A routable address has been configured.
 avahi-daemon[5696]: New relevant interface eth1.IPv4 for mDNS.
 avahi-daemon[5696]: Registering new address record for 10.254.251.52 on eth1.IPv4.
 avahi-daemon[5696]: Withdrawing address record for 10.254.251.52 on eth1.
 avahi-daemon[5696]: Leaving mDNS multicast group on interface eth1.IPv4 with address 10.254.251.52.
 avahi-autoipd(eth1)[6214]: client: RTNETLINK answers: Cannot assign requested address
 avahi-daemon[5696]: Interface eth1.IPv4 no longer relevant for mDNS.
 avahi-daemon[5696]: Joining mDNS multicast group on interface eth1.IPv4 with address 10.254.251.52.
 avahi-autoipd(eth1)[6214]: Script execution failed with return value 2
 avahi-daemon[5696]: New relevant interface eth1.IPv4 for mDNS.
 avahi-daemon[5696]: Registering new address record for 10.254.251.52 on eth1.IPv4.
 avahi-autoipd(eth1)[6213]: No longer a routable address configured, restarting probe process.
 avahi-daemon[5696]: Withdrawing address record for 10.254.251.52 on eth1.
 avahi-daemon[5696]: Leaving mDNS multicast group on interface eth1.IPv4 with address 10.254.251.52.
 avahi-daemon[5696]: Interface eth1.IPv4 no longer relevant for mDNS.
 dhclient: No working leases in persistent database - sleeping.