By default geard only listens on ipv4 0.0.0.0 which means ipv6
connectiosn don't work. Because we run dual stack and things expect ipv6
to work (we have AAAA dns records after all) force geard to listen on ::
which will accept ipv6 and ipv4 connections.
Change-Id: Ibf3bfc5f80ca139b375ee2902dc3149ac791ef96