On Sat, Aug 3, 2024 at 6:51 AM George at Clug wrote: > > Hi, > > What is the purpose of mDNS ?
"zero-configuration networking" seems to be the search term eg - https://en.wikipedia.org/wiki/Bonjour_(software) > It seems to be for multicast? no, it _uses_ multicast. <rant> when did "utilize" replace "use"? </rant> install wireshark, do a capture with a capture filter of "host 224.0.0.251" and see what's happening on your network. I see what looks like advertisements for the two printers on my network and my iPhone constantly querying for User Datagram Protocol, Src Port: 5353, Dst Port: 5353 Multicast Domain Name System (query) Transaction ID: 0x0000 Flags: 0x0000 Standard query Questions: 4 Answer RRs: 0 Authority RRs: 0 Additional RRs: 1 Queries lb._dns-sd._udp.local: type PTR, class IN, "QU" question _companion-link._tcp.local: type PTR, class IN, "QU" question _homekit._tcp.local: type PTR, class IN, "QU" question _sleep-proxy._udp.local: type PTR, class IN, "QU" question > What other use? zeroconf printing on Debian? I just installed Debian on a laptop. I haven't done anything wrt printing or printer configuration on this laptop and yet if I open mousepad and click on File / Print - both printers show up in the printer list. Regards, Lee
