What is the mDNS Multicast Multicast DNS DNS?

we all know DNS Probably is what,All correspondence between domain names and IP addresses must be relied on to translate,Like IP and Mac address this need ARP protocol as,In order to distinguish,We call this is called DNS uDNS,That isUnicast DNS

So,relatively,It is multicast (multicast) DNS,For Apple, it's osx,Multicast DNS[……]

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