I've found a bug in the interface the DhcpClient extension listens on. You can try the upstream source [1] or the Debian source package on mentors [2], if you like. A binary package should soon be available from unstable.
[1] https://github.com/blueman-project/blueman [2] http://mentors.debian.net/debian/pool/main/b/blueman/ -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org