@triantares as your comment on BUG hunting Enlightenment (E24+) - #77 by triantares , i think we should check -all- the features that provides network-manager (like inserting an username/password for the wpa connections) and see if we have them in connman
by other side, what is your reason to use connman instead of network-manager? 
just because e24 recommends / uses it? or because of a specific reason? (like, lighter, etc...)
