From: Stefano Brivio <sbrivio@redhat.com>
To: Nikolay Edigaryev <edigaryev@gmail.com>
Cc: David Gibson <david@gibson.dropbear.id.au>, passt-dev@passt.top
Subject: Re: [PATCH] arp: only send ARP replies for --gateway address
Date: Mon, 18 Sep 2023 16:01:34 +0200 [thread overview]
Message-ID: <20230918160134.09d2b706@elisabeth> (raw)
In-Reply-To: <ZQe1O6CqIqQWmcaM@zatzit>
On Mon, 18 Sep 2023 12:26:03 +1000
David Gibson <david@gibson.dropbear.id.au> wrote:
> On Fri, Sep 15, 2023 at 06:20:45PM +0400, Nikolay Edigaryev wrote:
> > Problem: when passt/pasta are working in a broadcast domain with more
> > than one host machine,
>
> Oof. So, at present, passt/pasta is really not designed to have more
> than a single machine on the "tap" side. Changing the ARP behaviour
> is likely to be the least of the problems with that setup.
Now I'm confused on which "side" this happens. :) Nikolay, can you
articulate the issue a bit better? Do you really have multiple *host*
machines? Does the passt process... move between them?
By the way, the only concern I have with this change is that the guest
might ignore the gateway address it's being assigned, for whatever
reason, and by just resolving "almost everything" we guarantee the
traffic goes out anyway.
If there's no other way to solve the issue you're facing, I would
rather propose to have this as an option, and perhaps have it off by
default.
--
Stefano
next prev parent reply other threads:[~2023-09-18 14:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-15 14:20 [PATCH] arp: only send ARP replies for --gateway address Nikolay Edigaryev
2023-09-18 2:26 ` David Gibson
2023-09-18 14:01 ` Stefano Brivio [this message]
2023-09-18 15:52 ` Nikolay Edigaryev
2023-09-19 2:09 ` David Gibson
2023-10-12 4:35 ` David Gibson
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