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 is added to the inside as a function of the presence of bonjour,Its role is in no DNS environment which allows the same network segment provided[……]