Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Carlos E. R." Newsgroups: comp.os.linux.misc Subject: Re: Multi-Networking in Linux - Multiple Subnets Date: Fri, 31 Jul 2026 14:04:37 +0200 Lines: 37 Message-ID: References: <114fdad$1trk7$1@news1.tnib.de> <114feat$1ock7$1@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net q9SNAv8Sz5xQX96TnEddrgDgoMvj6l13mIg32YzkrPIvB7EYXK Cancel-Lock: sha1:3Hj16gams3IfkKOIFR9QjXCvr28= sha256:zFUN7BxtsOdvRmUQnamjJAyl4G/+iyk58EJbuyYIIlY= User-Agent: Mozilla Thunderbird Content-Language: en-GB In-Reply-To: <114feat$1ock7$1@dont-email.me> Xref: csiph.com comp.os.linux.misc:89334 On 2026-07-30 13:59, Robert Heller wrote: > At Thu, 30 Jul 2026 13:42:04 +0200 Marc Haber wrote: > >> >> "Carlos E. R." wrote: >>> eth0: flagsA63 mtu 1500 >>> inet 192.168.2.9 netmask 255.255.0.0 broadcast 192.168.255.255 >> >> Using the entire 192.168.0.0/16 range for a single home network is a >> sure sign of a person not knowing too much about networking or an >> incompetent ISP. > > Indeed. If one really needs a class B sub-net for one's home netwoek (64K > nodes?) I believe there are class B sub-nets under 172.16.0.0 to > 172.31.255.255. Which I can not use. That modification to the ISP router will render it not working. > The 192.168.*.0 sub-nets are for class Class C Private > sub-nets. LOL. ChatGPT just said to me: The IPv4 address ranges reserved for private local networks (defined in RFC 1918) are: | Private range | CIDR notation | Number of addresses | Common use | | --------------------------------- | ---------------- | ------------------: | ----------------------------------------------- | | **10.0.0.0 – 10.255.255.255** | `10.0.0.0/8` | 16,777,216 | Large enterprise networks, cloud infrastructure | | **172.16.0.0 – 172.31.255.255** | `172.16.0.0/12` | 1,048,576 | Medium to large private networks | | **192.168.0.0 – 192.168.255.255** | `192.168.0.0/16` | 65,536 | Home routers and small office networks | It gives no link for this information, except citing RFC 1918 -- Cheers, Carlos E.R. ESπŸ‡ͺπŸ‡Έ, EUπŸ‡ͺπŸ‡Ί;