5.4 Server announcement and discovery using mDNS

To enable Clients to discover the UAFX Server, Controllers shall support an mDNS responder and include the defined UAFX capability in its mDNS announcements and responses as defined in OPC 10000‑12. Controllers are required to support a minimal mDNS responder and include the defined UAFX capability in its mDNS announcements and responses.

In discovering UAFX servers, clients may either use mDNS directly or use the local discovery server-multicast extension (mDNS-ME), as described in OPC 10000‑12.