Hi. Indeed, returning to 1.6.0 fixed the problem for me. I investigated the upstream bug and it seems there is a workaround. The request gets masked only if /etc/dhcp/dhclient.conf contains any request directive. The default debian one does, but after commenting it out, the NetworkManager works fine. It's not an option if there is some valid reason to have request directive in the configuration file, but for simple setups this might be the solution. I've commented the upstream a bit so maybe it will be fixed there.
-- Michal Kašpar
