Question re IPs-to-CIDR conversion program

[Paul Procacci]

Mark Wilson wrote:
>  I'm trying to write a program that will take 2 IPs and return an appropriate CIDR which contains both.
> I found this file: ips-to-cidr-nets.pl listed under ~eivind on FreeBSD, which sounds like it might be a good model.
> Unfortunately, I can't download the file (get "Forbidden") page, nor locate user "eivind" on the FreeBSD Homepages page to ask him/her about it.
> (It's dated 2001, in case that helps; apparently eivind is long gone...)
>
> 1. Can anyone get me a copy of this program? Or...
> 2. Put me in touch with its author so I can ask about it?? Or...
> 3. Point me to another program which does what I need?
>
> Thanks. I'm very new to all this; I was able to cobble together a CIDR-to-IPs calculator in JavaScript, but going this other direction seems much harder, and far more confusing.
>
>
>  
>
>
> -------------------------------------------------------
> Mark Wilson, CPUWORKS.COM
> wilsoncpu at aol.com
> -------------------------------------------------------
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>   
You may want to look at ipcalc (/usr/ports/net-mgmt/ipcalc)