Re: Weird MAC address

From	Marco Moock <mm@dorfdsl.de>
Newsgroups	linux.debian.user
Subject	Re: Weird MAC address
Date	2023-11-22 12:10 +0100
Message-ID	<HCThf-7cFz-9@gated-at.bofh.it> (permalink)
References	<HCSOd-7cg4-7@gated-at.bofh.it> <HCT7z-7cmH-1@gated-at.bofh.it> <HCT7z-7cmH-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Am 22.11.2023 um 11:58:55 Uhr schrieb Nicolas George:

> I do not see what the router has to do with anything. Can you
> elaborate what you mean?

Proxy-ARP offers the possibility to answer ARP requests of addresses
outside the own subnet sitting on another ethernet link.
In normal cases that is not needed. It is needed when systems exist
that don't have the same subnet mask - for whatever reason.

It is a niche situation mostly for very old operating systems, so
disable it by default on the router.

> On the server, we never enabled an option to accept ARP information
> that does not come as a reply to a request from the network stack, if
> such an option even exists, so even if such a packet came it should
> not have reached the ARP tables.

I dunno if your system accepts such ARP replies, maybe give it a manual
try.

Back to linux.debian.user | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Weird MAC address Nicolas George <george@nsup.org> - 2023-11-22 11:40 +0100
  Re: Weird MAC address Marco Moock <mm@dorfdsl.de> - 2023-11-22 12:00 +0100
    Re: Weird MAC address Marco Moock <mm@dorfdsl.de> - 2023-11-22 12:00 +0100
      Re: Weird MAC address Nicolas George <george@nsup.org> - 2023-11-22 12:10 +0100
        Re: Weird MAC address Marco Moock <mm@dorfdsl.de> - 2023-11-22 12:20 +0100
    Re: Weird MAC address Nicolas George <george@nsup.org> - 2023-11-22 12:00 +0100
      Re: Weird MAC address Marco Moock <mm@dorfdsl.de> - 2023-11-22 12:10 +0100

csiph-web