Advisory — D-root is changing its IPv4 address on the 3rd of January.

Mailman List Mirror (Read Only)
1

Concomittant wirh reduced risk assessment capability?

2

For anyone who is worried that the root server change might impact them,
they can go to http://www.iana.org/domains/root/files and download the root
zone file. It probably won't need to be updated again until the next round
of gTLDs is approved.

3

Err, no.

The root zone changes twice a day and its contents change quite frequently as TLD managers update their name servers, do key rollovers, etc.

If you're going to copy the root zone, I'd recommend using a zone transfer from the name servers described in http://dns.icann.org/services/axfr/ or, at the very least, set up a cron job to pull the root zone twice a day.

WRT the root _hints_ change, setting up a cron job to pull, verify, and install the root hints file periodically (once a month should probably be sufficient) would probably be a good idea.

Regards,
-drc

4

This change appears to have been completed, as of root zone serial 2013010300:

[krill:~]% host d.root-servers.net
d.root-servers.net has address 199.7.91.13
d.root-servers.net has IPv6 address 2001:500:2d::d
[krill:~]%
[krill:~]% curl -s ftp://rs.internic.net/domain/named.root | fgrep D.ROOT
. 3600000 NS D.ROOT-SERVERS.NET.
D.ROOT-SERVERS.NET. 3600000 A 199.7.91.13
D.ROOT-SERVERS.NET. 3600000 AAAA 2001:500:2D::smiley:
[krill:~]%

The authoritative location of the root hints file is <ftp://rs.internic.net/domain/named.root> and those who feel like being tidy DNS admins could pull a fresh copy from there so that the next time their nameserver is restarted it will prime optimally.

As discussed at some length before, those who prefer to be more hands-off about this will very likely see no negative impact from their laziness.

Joe

5

Perhaps someone at internic.net could explain why the file in the first directory is WRONG but that in the second includes the correct info?
[legacy cron jobs pointing at FTP. will obviously not succeed]

; This file is made available by InterNIC
; under anonymous FTP as
; file /domain/named.cache
; on server FTP.INTERNIC.NET
; -OR- RS.INTERNIC.NET

Regards
-H-

6

Hi Henry,