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Date: Mon, 15 Apr 2024 19:21:11 +0300
From: "A.Kitouwaykin" <cetus@list.ru>
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Subject: Re: [Sysadmins]
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On Mon, 15 Apr 2024 09:51:26 +0400
Sergey wrote:

> On Wednesday 10 April 2024, A.Kitouwaykin wrote:
> 
> > > > # sysctl -a | grep proxy_arp
> > > > что говорит?
> > 
> > Тут скорее rp_filter надо править...
>  
> Так arp, вроде как, это L2, а rp_filter для L3?
> 

О сколько нам открытий чудных...

В linux ip-адрес принадлежит не интерфейсу, а компьютеру.
Вот компьютер и отвечает на поступивший запрос. А куда отвечает?
В ether1.2115, ведь так?

Настроив rp_filter, мы можем запретить отвечать.
Или proxy_arp + правильный маршрут к этой забытой железке.

-- 
С уважением,
Китайкин Анатолий Константинович
АО "Радиоавионика", СПб