Hello,
I am trying to create a startup script for a Ubuntu-based OS that will alter my IP and MAC address on startup. I found several tutorials on how to write an init script, but I can't seem to find one that explains how to use /dev/random (random # generator) alongside the MAC and IP change commands.

Can I do this with /dev/random? Or is there a better function that is built into Ubuntu or the linux kernel?

How would I go about doing this? Also, can I implement this BEFORE the networking services run? Or do I need to wait until after then do the normal start/stop commands?

Thanks,
Imprive

Always best to quote your sources so seasoned users can gauge what possible solutions can be presented. What tutorials exactly? URLs!

Are you trying to nullify IP/MAC settings on a cloned image perhaps?

I have never seen this asked before in Years of IT work, IP/MAC+/dev/random

Quite unique, that or I'm quite clueless.
Why is /dev/urandom involved in this process?

First, ask your network-administrator's opinion about your idea.

It doesn't have to use /dev/random I just assumed that that was a function I might be able to utilize to randomly change my MAC address and IP address in linux at startup.

I was looking at this thread: http://www.backtrack-linux.org/forum...ad.php?t=38719
and it seemed like something that could be automated at startup so I didn't have to manually type anything in. As for startup script I came a across this link:

http://www.linuxquestions.org/questi...script-376302/

I am just not sure how I would modify it to suit my needs.

I also came across this post about a program called MAC changer: http://www.backtrack-linux.org/forum...ead.php?t=3774

I think this solves the MAC part of it, but I am still curious to see what the full script would look like.

Thanks,
Imprive