[dns-operations] FreeBSD and the slaving of the root zone

[Stephane Bortzmeyer]

Pierre Beyssac noticed that FreeBSD default configuration is now to
slave the root zone from the root name servers who accept it:

http://www.freebsd.org/cgi/cvsweb.cgi/src/etc/namedb/named.conf

/*	Slaving the following zones from the root name servers has some
	significant advantages:
	1. Faster local resolution for your users
	2. No spurious traffic will be sent from your network to the roots
	3. Greater resilience to any potential root server failure/DDoS

	If you do not wish to slave these zones from the root servers
	use the entry below instead.
	zone "." { type hint; file "named.root"; };
*/
zone "." {
	type slave;
	file "slave/root.slave";
	masters {
		192.5.5.241;	// F.ROOT-SERVERS.NET.
		192.228.79.201;	// B.ROOT-SERVERS.NET.
		192.33.4.12;	// C.ROOT-SERVERS.NET.
		192.112.36.4;	// G.ROOT-SERVERS.NET.
		193.0.14.129;	// K.ROOT-SERVERS.NET.
	};
	notify no;
};