Re: Spurious ARP entries...

From	Robert Heller <heller@deepsoft.com>
Newsgroups	comp.os.linux.misc
Subject	Re: Spurious ARP entries...
Date	2025-07-13 00:55 +0000
Organization	Deepwoods Software
Message-ID	<104v06h$2dvsb$1@dont-email.me> (permalink)
References	<104tdg2$22i42$14@dont-email.me> <jav57k1fv6kfgaabj6atbv7n505urkagsu@4ax.com>

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At Sat, 12 Jul 2025 21:29:32 -0300 Shadow <Sh@dow.br> wrote:

> 
> On Sat, 12 Jul 2025 11:30:26 +0100, The Natural Philosopher
> <tnp@invalid.invalid> wrote:
> 
> >
> >For unrelated reasons I took a look at my desktop ARP cache just now..
> >
> >$arp -a
> >_gateway (192.168.0.254) at 00:1d:aa:79:78:40 [ether] on eno1
> >pifi2 (192.168.0.202) at 2c:cf:67:88:c9:4b [ether] on eno1
> >? (192.168.0.248) at <incomplete> on eno1
> >? (192.168.0.2) at 1c:5a:3e:7e:37:1f [ether] on eno1
> >? (192.168.0.221) at <incomplete> on eno1
> >? (192.168.0.223) at <incomplete> on eno1
> >Coriolanus (192.168.0.101) at d8:3a:dd:85:22:b1 [ether] on eno1
> >? (192.168.0.141) at <incomplete> on eno1
> >? (192.168.0.10) at <incomplete> on eno1
> >? (192.168.0.58) at <incomplete> on eno1
> >? (192.168.0.247) at <incomplete> on eno1
> >heating-controller (192.168.0.201) at b8:27:eb:c3:31:3d [ether] on eno1
> >? (192.168.0.27) at <incomplete> on eno1
> >? (192.168.0.203) at <incomplete> on eno1
> >? (192.168.0.180) at <incomplete> on eno1
> >? (192.168.0.83) at <incomplete> on eno1
> >cymbeline (192.168.0.100) at 08:62:66:4a:85:d8 [ether] on eno1
> >? (192.168.0.102) at 3c:a8:2a:f6:3a:c8 [ether] on eno1
> >? (192.168.0.16) at <incomplete> on eno1
> >? (192.168.0.227) at <incomplete> on eno1
> >? (192.168.0.11) at <incomplete> on eno1
> >? (192.168.0.239) at <incomplete> on eno1
> >? (192.168.0.28) at <incomplete> on eno1
> >
> >The incomplete entries are for IP addresses I simply never have used.
> >
> >Anyone recognise this behaviour?
> >
> >After clearing, at least one is back...
> 
> 	My TV is always in my arp cache. I kind of got used to the
> intrusion.
> 	[]'s

Likely it is because you have the "instant on" (whatever it may be called) 
feature on.  I suspect this means that the TV is in "sleep" mode rather than 
fully powered down.  The processor is "running" in some minimual state and is 
maintaining a minimual network connection.

-- 
Robert Heller             -- Cell: 413-658-7953 GV: 978-633-5364
Deepwoods Software        -- Custom Software Services
http://www.deepsoft.com/  -- Linux Administration Services
heller@deepsoft.com       -- Webhosting Services

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Thread

Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-12 11:30 +0100
  Re: Spurious ARP entries... Robert Heller <heller@deepsoft.com> - 2025-07-12 10:36 +0000
    Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-12 11:52 +0100
  Re: Spurious ARP entries... Andy Burns <usenet@andyburns.uk> - 2025-07-12 11:41 +0100
    Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-12 11:54 +0100
      Re: Spurious ARP entries... Andy Burns <usenet@andyburns.uk> - 2025-07-12 12:14 +0100
        Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-12 13:06 +0100
          Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-13 01:20 +0000
            Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-13 00:16 -0400
              Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-13 12:01 +0100
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-13 22:10 +0000
                Re: Spurious ARP entries... "Carlos E.R." <robin_listas@es.invalid> - 2025-07-14 10:19 +0200
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-14 14:54 +0100
                Re: Spurious ARP entries... "Carlos E.R." <robin_listas@es.invalid> - 2025-07-15 11:58 +0200
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-15 15:20 +0100
                Re: Spurious ARP entries... "Carlos E.R." <robin_listas@es.invalid> - 2025-07-16 11:21 +0200
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-16 16:46 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-15 22:10 -0400
  Re: Spurious ARP entries... Richard Kettlewell <invalid@invalid.invalid> - 2025-07-12 11:43 +0100
    Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-12 12:02 +0100
  Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-12 19:33 -0400
    Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-13 11:52 +0100
      Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-14 00:08 -0400
  Re: Spurious ARP entries... Shadow <Sh@dow.br> - 2025-07-12 21:29 -0300
    Re: Spurious ARP entries... Robert Heller <heller@deepsoft.com> - 2025-07-13 00:55 +0000
      Re: Spurious ARP entries... Andy Burns <usenet@andyburns.uk> - 2025-07-13 06:35 +0100
        Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-13 02:30 -0400
          Re: Spurious ARP entries... John Ames <commodorejohn@gmail.com> - 2025-07-14 08:06 -0700
            Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-14 22:05 +0000
              Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-15 22:21 -0400
                Re: Spurious ARP entries... Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-07-16 15:53 +0000
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-16 19:19 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 03:13 -0400
              Re: Spurious ARP entries... John Ames <commodorejohn@gmail.com> - 2025-07-16 08:05 -0700
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-16 16:47 +0100
                Re: Spurious ARP entries... John Ames <commodorejohn@gmail.com> - 2025-07-16 09:02 -0700
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-16 19:17 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 03:10 -0400
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 03:08 -0400
                Re: Spurious ARP entries... Richard Kettlewell <invalid@invalid.invalid> - 2025-07-16 19:18 +0100
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-16 19:21 +0100
                Re: Spurious ARP entries... Pancho <Pancho.Jones@protonmail.com> - 2025-07-16 19:41 +0100
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-17 02:15 +0000
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 03:38 -0400
                Re: Spurious ARP entries... Pancho <Pancho.Jones@protonmail.com> - 2025-07-17 09:29 +0100
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-17 09:46 +0100
                Re: Spurious ARP entries... Pancho <Pancho.Jones@protonmail.com> - 2025-07-17 10:39 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 22:53 -0400
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-18 05:50 +0000
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-18 02:11 -0400
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 22:42 -0400
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-18 11:05 +0100
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-18 23:19 +0000
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-18 23:06 -0400
                Re: Spurious ARP entries... Pancho <Pancho.Jones@protonmail.com> - 2025-07-19 10:50 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 03:15 -0400
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-17 09:50 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 22:48 -0400
                Re: Spurious ARP entries... John Ames <commodorejohn@gmail.com> - 2025-07-18 09:02 -0700
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-18 05:48 +0000
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 03:41 -0400
                Re: Spurious ARP entries... Richard Kettlewell <invalid@invalid.invalid> - 2025-07-17 11:19 +0100
                Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-17 22:58 -0400
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-17 02:14 +0000
                Re: Spurious ARP entries... John Ames <commodorejohn@gmail.com> - 2025-07-17 07:52 -0700
                Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-17 19:59 +0100
                Re: Spurious ARP entries... Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-07-18 05:47 +0000
            Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-15 22:20 -0400
  Re: Spurious ARP entries... jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-07-13 13:03 -0400
    Re: Spurious ARP entries... The Natural Philosopher <tnp@invalid.invalid> - 2025-07-13 21:46 +0100
      Re: Spurious ARP entries... vallor <vallor@cultnix.org> - 2025-07-13 22:14 +0000
      Re: Spurious ARP entries... c186282 <c186282@nnada.net> - 2025-07-14 00:10 -0400

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