Re: Multi-Networking in Linux - Multiple Subnets

From	Andy Burns <usenet@andyburns.uk>
Newsgroups	comp.os.linux.misc
Subject	Re: Multi-Networking in Linux - Multiple Subnets
Date	2026-07-30 15:06 +0100
Message-ID	<nd141oF784qU1@mid.individual.net> (permalink)
References	<VNWcnecBi5IpXvf3nZ2dnZfqnPSdnZ2d@giganews.com> <nd0nqeF52jrU2@mid.individual.net> <114fdad$1trk7$1@news1.tnib.de> <nd13akF74rsU1@mid.individual.net> <114flbe$1qul5$4@dont-email.me>

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The Natural Philosopher wrote:

> Andy Burns wrote:
>
>> If you want multiple IP subnets on a single ethernet network, you'd be 
>> better off using VLANs, even cheapo switches can handle that, then 
>> your linux box with a single NIC can have VLAN sub-interfaces e.g. 
>> eth1.1 on 192.168.0.1/24 and eth1.10 on 192.168.1.0/24
>>
>> If you don't want VLANs you *could* use a NIC alias so that e.g. eth1 
>> is on 192.168.0.1/24 and the alias eth1:2 is on 192.168.1.1/24 ... but 
>> why?
>
> They look the same to me.
Sure the names of the interfaces are just one character different (a 
colon vs a fullstop) but with VLANs, each sub-interface will keep its 
traffic isolated, won't see broadcast/multicast traffic from the other 
one ...

Thread

Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-29 23:23 -0400
  Re: Multi-Networking in Linux - Multiple Subnets rbowman <bowman@montana.com> - 2026-07-30 04:14 +0000
    Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-30 23:38 -0400
      Re: Multi-Networking in Linux - Multiple Subnets rbowman <bowman@montana.com> - 2026-07-31 05:31 +0000
      Re: Multi-Networking in Linux - Multiple Subnets Richard Kettlewell <invalid@invalid.invalid> - 2026-07-31 09:44 +0100
  Re: Multi-Networking in Linux - Multiple Subnets "Carlos E. R." <robin_listas@es.invalid> - 2026-07-30 12:37 +0200
    Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 13:42 +0200
      Re: Multi-Networking in Linux - Multiple Subnets "Carlos E. R." <robin_listas@es.invalid> - 2026-07-30 13:58 +0200
        Re: Multi-Networking in Linux - Multiple Subnets Robert Heller <heller@deepsoft.com> - 2026-07-30 12:14 +0000
        Re: Multi-Networking in Linux - Multiple Subnets The Natural Philosopher <tnp@invalid.invalid> - 2026-07-30 13:25 +0100
        Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 18:43 +0200
          Re: Multi-Networking in Linux - Multiple Subnets rbowman <bowman@montana.com> - 2026-07-30 19:22 +0000
            Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 21:53 +0200
              Re: Multi-Networking in Linux - Multiple Subnets rbowman <bowman@montana.com> - 2026-07-31 05:08 +0000
                Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-31 01:16 -0400
                Re: Multi-Networking in Linux - Multiple Subnets rbowman <bowman@montana.com> - 2026-07-31 08:00 +0000
            Re: Multi-Networking in Linux - Multiple Subnets Robert Heller <heller@deepsoft.com> - 2026-07-30 20:07 +0000
              Re: Multi-Networking in Linux - Multiple Subnets rbowman <bowman@montana.com> - 2026-07-31 05:14 +0000
        Re: Multi-Networking in Linux - Multiple Subnets Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-30 21:18 +0000
          Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-30 23:50 -0400
            Re: Multi-Networking in Linux - Multiple Subnets Robert Riches <spamtrap42@jacob21819.net> - 2026-07-31 04:06 +0000
              Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-31 00:34 -0400
      Re: Multi-Networking in Linux - Multiple Subnets Robert Heller <heller@deepsoft.com> - 2026-07-30 11:59 +0000
        Re: Multi-Networking in Linux - Multiple Subnets The Natural Philosopher <tnp@invalid.invalid> - 2026-07-30 13:32 +0100
        Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 18:44 +0200
          Re: Multi-Networking in Linux - Multiple Subnets The Natural Philosopher <tnp@invalid.invalid> - 2026-07-30 18:06 +0100
            Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 21:54 +0200
        Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-30 23:48 -0400
        Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-31 08:15 +0200
          Re: Multi-Networking in Linux - Multiple Subnets Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-07-31 06:53 +0000
      Re: Multi-Networking in Linux - Multiple Subnets The Natural Philosopher <tnp@invalid.invalid> - 2026-07-30 13:24 +0100
        Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-31 08:16 +0200
      Re: Multi-Networking in Linux - Multiple Subnets Andy Burns <usenet@andyburns.uk> - 2026-07-30 14:53 +0100
        Re: Multi-Networking in Linux - Multiple Subnets The Natural Philosopher <tnp@invalid.invalid> - 2026-07-30 14:59 +0100
          Re: Multi-Networking in Linux - Multiple Subnets Andy Burns <usenet@andyburns.uk> - 2026-07-30 15:06 +0100
            Re: Multi-Networking in Linux - Multiple Subnets Rich <rich@example.invalid> - 2026-07-30 14:35 +0000
        Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 18:46 +0200
      Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-30 23:45 -0400
    Re: Multi-Networking in Linux - Multiple Subnets c186282 <c186282@nnada.net> - 2026-07-30 23:43 -0400
  Re: Multi-Networking in Linux - Multiple Subnets Marc Haber <mh+usenetspam2616@zugschl.us> - 2026-07-30 13:48 +0200

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