Ars Technica

Run a command when the IP changes

I would think one of dynamic DNS client utilities might do this... Check through the list here and see if any allow running an external command on detection ...
MUO on MSN

5 Windows Terminal commands I run first when the internet breaks

Feel smarter than your router in 60 seconds.
Ars Technica

Change static DNS IP address via command line. How?

Hi,<BR><BR>Need to change the static DNS IP address in 60-some Macs. All the Macs are running 10.3.9. I have ARD 3.x so I could blast a Unix command to each, or replace some key file.<BR><BR>What ...
CCM

Windows networking commands: with examples, cheat sheet

It is sometimes useful to know the network commands to analyze or configure your TCP/IP networks. Here is the list of commands that can be used in the command prompt. This command is also useful to ...