On Sun, Aug 19, 2007 at 10:22:46PM +1000, Paul (NCC/CS.) wrote:
> how can I get updates into the dns from dhcpd when 
> a new machine comes on my network?

Put something like this into your "/etc/dhcpd.conf":

ddns-domainname "dhcp.bom.gov.au";
ddns-rev-domainname "in-addr.arpa";
ddns-updates on;
ddns-update-style interim;
include "/var/chroot/named/etc/dns.keys";

zone zhadum.intern. {
        primary 10.3.2.1;
        key dhcp-key.bom.gov.au;
}

And this is the according configuration in "/var/chroot/named/etc/named.conf":

include "/etc/dns.keys";

zone "2.3.10.IN-ADDR.ARPA" {
	type master;
	file "db.10.3.2";
	allow-update {
                key dhcp-key.bom.gov.au
	};
};

zone "dhcp.bom.gov.au" {
        type master;
        file "dynamic/db.dhcp.bom.gov.au";
        allow-update {
                key dhcp-key.bom.gov.au
        };
};

Use "rndc-confgen" generate the file "/var/chroot/named/etc/dns.keys" and
use an editor to remove everything except the key section. The result
should look like this:

key "dhcp-key.bom.gov.au" {
        algorithm hmac-md5;
        secret "sCUNxcRGtvLvvdNM+S1DTQ==";
};

Make sure that the file has permission 640 and is owned by user "root"
and group "named".

	Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/