Providing DNSSD Service on Infrastructure

DNS Service Discovery provides several mechanisms whereby hosts can discover and advertise services on an IP network. Such discovery can be done using Multicast DNS (mDNS) or DNS, and advertising can be done with DNSSD Service Registration Protocol (SRP) or mDNS. This document describes a way to provide a unified DNSSD proxy service that allows hosts to advertise services using SRP and discover services using unicast DNS via a Discovery Proxy rather than using of mDNS, in scenarios where mDNS is currently the only option.