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From: "Carlos E. R." <robin_listas@es.invalid>
Newsgroups: comp.os.linux.misc
Subject: Re: Multi-Networking in Linux - Multiple Subnets
Date: Sat, 1 Aug 2026 14:11:18 +0200
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On 2026-07-31 14:51, Marc Haber wrote:
> "Carlos E. R." <robin_listas@es.invalid> wrote:
>> 172.16.0.0/12.
> 
> Do not use that network with this prefix length in production
> anywhere.
> 
> Not even to trigger me.
> 
> It's plain stupid.

I got it from an internet search:

The most commonly used private IPv4 address ranges are defined by Internet Engineering Task Force in RFC 1918:

| CIDR             | Address Range                     | Number of Addresses |
| ---------------- | --------------------------------- | ------------------- |
| `10.0.0.0/8`     | `10.0.0.0` – `10.255.255.255`     | 16,777,216          |
| `172.16.0.0/12`  | `172.16.0.0` – `172.31.255.255`   | 1,048,576           |
| `192.168.0.0/16` | `192.168.0.0` – `192.168.255.255` | 65,536              |



If it is wrong, you will have to explain.


-- 
Cheers,
        Carlos E.R.
        ES🇪🇸, EU🇪🇺;