----- Original Message -----
Sent: Thursday, November 14, 2002 8:01
PM
Subject: Re: (clug-talk) BIND &
dynamic DNS with DHCP
I'd guess the long number is a MAC address from
the look of it. I can't help you with it, but that is what the number
looks like to me.
I'd be curious to know how this ends up, so
please keep the list posted. In the end, I'd like to benefit from your
experiences and set it up for myself. I don't need it, so I'm not in a
rush to have it working, but I'd like to have it, so why not...
Kev.
----- Original Message -----
Sent: Thursday, November 14, 2002 4:26
PM
Subject: (clug-talk) BIND & dynamic
DNS with DHCP
Trying to get DDNS working. Some problems fixed and some new
problems.
So far I have found that dhcpd version 3 is needed for
DDNS and becase of a bug in Bind 9.2.0 I also needed Bind 9.2.1, maybe not
but I upgraded anyway. Also the dhcp clients must send their host names for
this to work and they don't by default so for now I am doing this by hand
but I need find a way to make the network scripts on the clinets send their
host names when the network is started. For now I am using the -h option for
dhcpcd.
New problem. On my DNS I have a master zone Ept. When a
client requests an IP the dhcpd server detects the hostname correctly and
using my configuration setting for "Dynamic DNS domain name" it correctly
assigns it to the Ept domain. The dhcpd makes a call to res_nupdate in the
shared library for bind. The bind library reports that some big long number
is not a zone. As you see from the /var/log/message file
Nov 14
15:46:24 grethor dhcpd: if IN A SlimBox.Ept domain doesn't exist add 43200
IN A SlimBox.Ept 192.168.0.108 add 43200 IN TXT SlimBox.Ept
"314fa6f54bd46778472ffc9d954897d3c9": not a zone.
I don't know what
this number is but each client gets a different number and they always get
the same number. It is to big to be an md5sum, I think. But it could be like
an md5sum because in the documentation for dhcpd it talks about using md5sum
to generate names for hosts that the names are not sent to the server using
dhcpcd -h <hostname>
Help! Has anyone used Linux to do DDNS?
The abiliy to do DDNS in realtime using the dhcpd server seems to be a new
thing. There are many simple hacks and scripts to setup DDNS using cron and
other non-realtime ways but I need realtime.
