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Re: hidden patch

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: hidden patch
From: Michael Stiller <ms@xxxxxxxxxx>
Date: Tue, 08 Nov 2005 10:03:22 +0100
On Tue, 2005-11-08 at 17:52 +0900, Horms wrote:
> On Tue, Nov 08, 2005 at 09:37:51AM +0100, Michael Stiller wrote:
> > 
> > > Patching kernels is a tricky and often painful art, even for the
> > > experienced. I'm not sure which version of CentOS you are using,
> > > but I suspect it already has the arp_ignore and arp_announce proc
> > > values, which can be used instead of, and are superior to
> > > the hidden proc value. Please consider using these instead,
> > > if they are there, you will not need to patch your kernel.
> > 
> > If the centos kernel is similar to the rhel 4 kernel it should work
> > like horms said. 
> > 
> > Check if the following "files" are available:
> > 
> > /proc/sys/net/ipv4/conf/all/arp_ignore and arp_announce
> > 
> > On fedora core 3 i did:
> > 
> > in /etc/sysctl.conf:
> > 
> > net.ipv4.conf.lo.arp_ignore = 1
> > net.ipv4.conf.lo.arp_announce = 2
> 
> This should be eth0 not lo

I guess this depends on the actual config? 
I used loopback aliases for the VIPs.

-Michael


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