Quality of Service in mobile ad-hoc networks has been considered so far with respect to improving routing protocols mostly. However, routing table updates may often be timeconsuming and re-routing does not work in the case a mobile device offering an service (e.g. an Internet gateway) is shutting down. In this paper, we propose a flexible Management Entity that integrates both network state changes and service changes into a management information base within the IP layer. Service discovery protocols are helpful in detecting service information. We show that our Management Entity allows switching network technologies efficiently and thus can avoid breaking TCP connections.