dhcp and dns

tangle · 09-19-2002, 07:48 AM

does anyone know how to setup dhcp to automatically update dns like windows does? Thanks

acid_kewpie · 09-19-2002, 12:06 PM

on the server side i presume you mean? it's possible on dhcpd 3.0+check the docs that are out there. i've tried in the recent past and had no success at all though! There are proprietry solutions availble though... but presumably you want open source.

bbeers · 09-19-2002, 09:38 PM

On the server side, do you have a line:

option domain-name-servers <your DNS IP>

in your dhcpd.conf file?

On the client side, running dhcpcd should make temporary changes to your /etc/resolv.conf file based on what the dhcp server sent to you.

If you mean that your DNS server is changing after starting the server or client, I don't have a solution.

-bbeers

tangle · 09-19-2002, 09:57 PM

I may not have asked the question right. In Windows when a client receives a lease from a DHCP server. The server updates the name to IP address on the DNS server. This makes it easy. I was wondering it there is a way to set this up using BIND and DHCP on a Linux box? Sorry for the confusion.

bbeers · 09-19-2002, 10:26 PM

Is that a named config option? Have you looked at

http://www.tldp.org/HOWTO/DNS-HOWTO.html

Sorry, I don't know any more.

-bbeers

acid_kewpie · 09-20-2002, 04:57 AM

tangle.. that was the question i tried to answer... you also need to make sure you send a hostname from the client (DHCP_HOSTNAME=whatever in ifcfg-ethX). you will need a lot of security stuff in there though, which is where i got stuck.

acid_kewpie · 09-24-2002, 09:35 AM

reading Linux Format in the newsagents today, i saw this link...

http://www.heronforge.net/~stephen/D.../dhcp-dns.html

tangle · 09-26-2002, 06:20 PM

Thanks acid_kewpie, that looks like it will work.