Subject: Re: Aw: IP-Packets over wrong Ethernet device

From: zhuyj <[email-masked]>
Date: Thu, 03 Jul 2014 13:39:39 +0800

On 06/20/2014 04:22 PM, "Conchúr Navid" wrote:
>> A dump on the management network ethernet interface (192.168.1.x/24) shows me that there was really an ARP request of the sender for 192.168.200.x/24 on this interface which was replied by the receiver on that interface. Is there a way to disable this reply on the "wrong" interface without using ARP-tables?
> This is done by setting arp_ignore to 2 in sysctl (for the correct interfaces):
>
> sysctl -a|grep arp_ignore
> sysctl -w net.ipv4.conf.eth5.arp_ignore=2
This is explained in Linux Network Internal, 28.5.2.2. ARP_IGNORE

2  Like 1, but the source IP (sender's address) must belong to the same 
subnet as the target IP.

Zhu Yanjun
> Thanks
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