DHCP client and DYnamic DNS service auto-updating

[Carthik Sharma]

Hi Folks,

I run a server at home, and would like to have a domain name assigned
to it so I can access it from work. Since I havea dynamic IP, I use
http://sh.nu to serve me as a dynamic dns server.

I got a script from said website to enable me to auto-update the IP
address whenever it changes. The perl script's README says:

"Execute dyn.pl: perl dyn.pl, or chmod +x dyn.pl and ./dyn.pl. You can also
   reference it in your /etc/dhcpc/dhcpcd-eth0.exe file (This probably varies by
   distro...YMMV) for automatic update when your IP address changes.
"

However, since Ubuntu uses dhcp3, I cannot use the above instruction.

Can some kind soul please guide a newbie in setting this script up so
that whenver the IP address assigned to me by the dhcp router, the
script (dyn.pl) can be called/executed by dhcp3's dhclient. I see some
directory called dhclient-enter-hooks.d in /etc/dhcp3/ I suspect I
will have to use a script placed here, but have no clue how to
proceed.

A google search yields nothing, either.

Thank you!

Carthik.

--
Ph.D. Candidate
University of Central Florida
Homepage: http://carthik.net