BIND - slaving the root zone and signature expired

Damien Fleuriot ml at
Thu Oct 25 16:55:48 UTC 2012

On 25 October 2012 18:33, Warren Block <wblock at> wrote:
> On Thu, 25 Oct 2012, Damien Fleuriot wrote:
>> Anyone else experienced this problem today ?
>> We slave the root zone and have received "signature expired" errors.
> Found this:
> which leads to this:

Hi Warren and thanks for your reply,

I've dug around some more and identified the problem we've been having.

Apparently, from a given netblock, we can't AXFR the "." and "arpa"
zones anymore with F.ROOT-SERVERS.NET.
We can from some other boxes.
I suspect we might have been firewalled or something, although we
don't query them very often , but that's beyond the point.

I've now transitioned all our PF boxes to slave from
"" and "" as per the
documentation found in /etc/namedb/named.conf

What bothers me is that the commented lines from named.conf say to use
the ICANN XFR servers, while the actual commented configuration uses

See below a freshly SVNup'd copy on 10.0:

% svn info named.conf
Path: named.conf
Name: named.conf
Working Copy Root Path: /data/freebsd/src/head
URL: svn://
Repository Root: svn://
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 242082
Node Kind: file
Schedule: normal
Last Changed Author: uqs
Last Changed Rev: 229783
Last Changed Date: 2012-01-07 16:10:32 +0000 (Sat, 07 Jan 2012)
Text Last Updated: 2012-09-01 11:43:31 +0000 (Sat, 01 Sep 2012)
Checksum: 598add209c192aac1dc4d973ce31922dff8b93c9

I SVNup'd it just today, and yet:

	As documented at these zones:
	are available for AXFR from these servers on IPv4 and IPv6:,
zone "." {
	type slave;
	file "/etc/namedb/slave/root.slave";
	masters {;	// F.ROOT-SERVERS.NET.
	notify no;

I'm going to file a PR with a small diff to use the ICANN's XFR
servers instead of F.

Thanks for your feedback regardless :)

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