Just want to say thanks for all your insights. It had been very useful and helpful :D ------- Original message ------- From: Cowles, Steve <steve@xxxxxxxxxxxxxxx> Date: Sat, 11 Oct 2003 16:08:10 -0500 Subject: RE: Re: DHCP Server and Internet Connection Sharing David Smith wrote: > Thanx a lot, using the "option domain-name-servers" it worked perfect > but ..... > > What if my ISP change the DNS servers addresses ?? > > Do I have to manually change these values ? If you are running your own DHCP server behind your firewall, then Yes, you would need to manually change the "option domain-name-servers" in dhcpd.conf should your ISP change their DNS servers. > > What about de ddns-update-style. The manual said that ad hoc > ddns-update-style is deprecated and doesn't > works. How Can I do to get automatic dns updates through dhcp ?? If you are not running your own DNS server, then all the ddns-* options do not apply. FWIW: I'm not aware of any tools that would update your dhcpd.conf file (and reload dhcpd) should your ISP change their DNS servers. Plus, your lease-time would need to be short for the change to take effect in a timely manner at the client end. If your ISP assigns your public IP address through DHCP, then I would think you could write a shell script that monitors the contents of /etc/resolv.conf for any changes and then send you an e-mail so that you can make the dhcpd.conf change in a timely manner. > > Thanx again and apologizes, maybe it's too simple ;) bue .... I'm > really a newbie > > p.s. My dhcpd.conf looks like this > > ddns-updates on; > ddns-update-style interim; If you are not running your own DNS server, then the above options are pointless. Plus you have not specified which DNS zones to update along with an MD5 KEY for nsupdate to use in dhcpd.conf. (e.g. dnssec-keygen) Steve Cowles -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list SIZE does matter - The UK's biggest *Free* Web based mail - 10 MB Free mail.lycos.co.uk
