Thank you very much for your review and the third patch!

I have 3 small additions to your work (see your adapted patch in the attachments):

I added a commit message (although I guess you'll edit that again anyways)
I extended your explanations on the `interface' option (when bind-dynamic?` or bind-interfaces? is set...)
I filled in your TODO

Please let me know (don't forget to cc me in your reply) if I can do anything else to merge this patch-set.

Thanks again, for your time, patience and expertise

gabriel