DNS Tracing

[Jim Reid]

>>>>> "Kevin" == Kevin Darcy <kcd at daimlerchrysler.com> writes:

    Kevin> BIND doesn't really have a tracing tool like that (although
    Kevin> I understand that the "dnscache" package from Dan Bernstein
    Kevin> does have such a tool).

FWIW, the BIND9 dig has a +trace option to show who contributed to the
answer:

	% dig ecs1.altamente.com any +trace
	; <<>> DiG 9.0 <<>> ecs1.altamente.com any +trace
	;; global options:  printcmd
	;; Received 436 bytes from 62.6.242.10#53 in 7 ms
	;; Received 452 bytes from 128.63.2.53#53 in 262 ms
	ecs1.altamente.com.     172800  IN      A       209.12.224.11

	;; Received 182 bytes from 195.8.99.11#53 in 122 ms

So my local server (62.6.242.10) returned details of the root
servers. One of them - 128.63.2.53 - was queried. It gave a referral
to one of the com name servers (195.8.99.11) which returned the above
A record.