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

Thu Jan 3 16:38:44 UTC 2013

On 2012-12-18, at 11:15, David Conrad <drc at virtualized.org> wrote:

> 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.

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::D
[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