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Re: 2.4.28 neighbour/arp problem

To: netdev@xxxxxxxxxxx
Subject: Re: 2.4.28 neighbour/arp problem
From: mmadore <mmadore@xxxxxxxxx>
Date: Mon, 13 Dec 2004 11:13:03 -0800
Sender: netdev-bounce@xxxxxxxxxxx
Sorry for responding to my own post, but the attachment didn't get attached.

Mike

On Mon, Dec 13, 2004 at 10:57am mmadore <mmadore@xxxxxxxxx> wrote:
> Hi,
> 
> I am seeing some strange behavior with the changes to the neighbour/arp code 
> that went into the 2.4.28 kernel.  When I first boot the system with 2.4.28, 
> I cannot connect to other machines on my network.  If I print out the arp 
> table, I will see something like this:
> 
> [root@node1 root]# arp
> Address                  HWtype  HWaddress           Flags Mask            
> Ifaceiserver.mynet.com                (incomplete)                            
>   eth0
> dns.mynet.com            ether   00:90:27:34:5F:6A   C                     
> eth0
> iserver.mynet.com        ether   00:E0:81:04:DC:F0   C                     
> eth0
> 
> For some reason, the system I am trying to connect to shows up twice.  If I 
> bring down eth0 and then start it again, I can then connect to the system.  
> Also, If I wait for a number of minutes, the (incomplete) entry will 
> disappear from the arp table and I can connect to the system.
> 
> If I apply the attached path to backout the arp/neighbour changes, then 
> everthing seems to work fine.
> 
> The problem only occurs with 2.4.28.  Both 2.4.27 and 2.6.9 work correctly.  
> Also, I have reproduced this issue on RedHat 7.3, 8.0, 9 and Fedora Core 1 
> (using 2.4.28) with both Intel e1000 and Marvell gigabit (sk98lin).
> 
> Let me know if I can provide additional information.
> 
> Mike
> 
> 

Attachment: arp-hash-backout.patch
Description: Text Data

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