DDNS Questions

[DESETech - German P. Santillan]

-----Original Message-----
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf
Of Simon Hobson
Sent: Monday, April 03, 2006 5:14 AM
To: dhcp-users at isc.org
Subject: Re: DDNS Questions

John Simon wrote:

>1. Right now I just picked "example.com" as my internal domain to use in
the
>conf files and for the zone files. So all my internal machines are
><hostname>.example.com. Is it possible to set up DDNS updates WITHOUT using
>a domain name (for someone in my situation who doesn't really have a real
>domain name to map my machines on to.

It's a problem. Many people pick <somename>.local which is pretty 
well guaranteed not to clash with someone, but it does cause some 
issues with multicast dns (aka Rendevous, Autoconf, Zeroconf etc) 
which also use .local.

Other just pick a domain name - at my last job we had a subsiduary 
that did this and ignored my 'hints' that they should either register 
the domain name or stop using it.

>2. All the internal machines work perfectly with DDNS. However, I haven't
>been able to figure out how to also get my router to add its hostname to
the
>DNS -- since I would like to be able to use its hostname (instead of
>192.168.1.1, etc.) when I am ssh-ing into it from an internal machine.

Add the records manually.

No you are doing ddns, either use nsupdate, or stop bind before 
editing the zone files (and delete the jnl files). DO NOT try to edit 
the zone files while bind is running.

You can edit zone files when the BIND is running, you can do this with:

rndc freeze "example.com"
(edit your zone file)
	(add your DNS new records)
	(don´t forguet to change the file's serial)
(save your zone file) 
rndc unfreeze "example.com" 

Sorry for my english

Regards

Germán P. Santillán
Administrador de Redes
Responsable Dpto. Técnico
DESETech Argentina S.A.
San Martín 133 - CP: B8000FIC
Bahía Blanca - Argentina
Tel/Fax: +54 (291) 456-5642
gsantillan at desetech.com.ar
http://www.desetech.com.ar