mDNS protocol application scenario research summary
mDNS protocol application scenario research summary

mDNS multicast DNS, using port 5353, multicast address 224.0.0.251. In a small network without a regular DNS server, mDNS can be used to implement DNS-like programming interfaces, packet formats, and operational semantics. The MDNS protocol packet has the same message structure as the DNS packet, but some fields have new meanings for MDNS.