On Nov 16, 01:42:58 PM (Saturday), or Thereabouts, Mahantesh wrote:

:: Anyway I researched a bit, got the solution. Here are steps:
:: 1)Add the following entries to /etc/sysconfig/network-scripts/ifcfg-eth0
:: file.

I cannot understand how this could possibly work. Which DNS server(s) will
the updates be sent to? or will it just add an entry in /etc/hosts ?

:: 4) Then '/sbin/ifdown eth0' and then '/sbin/ifup eth0' 

Will the ifup script read your resolv.conf and send the updates ?

Have you actually tested this ?

The following is what i'm using for a LAN of >300 m/c's and it works fine.

ISC dhcpd >v3.0 supports Dynamic DNS Updates. (ISC DHCP is the default DHCP
server that comes with most Linux distributions) Download and configure it

For eg. -

The following should go into dhcpd.conf

[in the global section -]

ddns-update-style interim;
ddns-domainname "lab.example.com";

[defining zones and their host DNS servers for forward and reverse lookups ]

zone lab.example.com. {
        primary 192.168.1.1;
}

zone 1.168.192.in-addr.arpa. {
        primary 192.168.1.1;
}


HTH

Ananth
--
You have all the characteristics of a popular politician: a horrible voice,
bad breeding, and a vulgar manner.
                -- Aristophanes


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