Multicast DNS & the ".local" domain

[Kyrre Ness Sjobak]

tor, 11.11.2004 kl. 18.54 skrev Felipe Alfaro Solana:
> Short question: Does Fedora Core 3 support multicast DNS name 
> resolution for the ".local" domain?
> 
> Long: I can resolv my Linux hostname from my Mac OS X computer, but my 
> Linux box can't resolve my Mac OS X hostname.
> 
> Looking at the network traffic, Mac OS X name queries for the ".local" 
> domain do send mDNS traffic to the multicast mDNS address. Linux 
> queries for the ".local" domain go against my ISP DNS server.

So that is what "mDNS" stands for. What is it? Where can i find
documentation? Simple, easy-to-understand explanations? Does it mean
that i can name my computer "kyrre.local" and it will automatically be
discovered and resolved on the LAN?