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  3. April 2024

Re: Correct CIDR for two networks.

Hello John,

Am 19.04.2024 um 18:27 schrieb John Yeung <gallium.arsenide@xxxxxxxxx>:

Interestingly, I have not found a calculator that accepts two IP addresses (or ranges, as Jim started with) and returns the tightest CIDR or subnet mask that covers both of them. Would be a fun little programming exercise.

Here you are:

~ $ ipcalc 192.168.0.0 - 192.168.1.255
deaggregate 192.168.0.0 - 192.168.1.255
192.168.0.0/23

From: https://github.com/kjokjo/ipcalc

Should run on IBM i, there's a Perl port for it, AFAIK.

:wq! PoC


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