I was affected by the same bug (Freebox Revolution from Free (French ISP) here). I switched to isc-dhcp-client by creating a file /etc/NetworkManager/conf.d/dhcp-client.conf containing the 2 following lines: [main] dhcp=dhclient
Then I restarted NetworkManager using this command: sudo service NetworkManager restart and IPv4 is working as expected again. The bug is therefore probably related to the internal dhcp client. Regards
