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> 2. Use the stock RHEL kernel, and use arptables to control the arp problem.
> There is an arptables package for RHEL AS and ES, and if you
> recompile the available source it works for WS.
>
> I have had some success in my lab with something along the lines of
> the following. And it has the advantage over 1) that you don't need
> to change the kernel.
>
> arptables -F
> arptables -A IN -d VIP -j DROP
> arptables -A OUT -d VIP -j DROP -j mangle --mangle-ip-s RIP
>
> http://archive.linuxvirtualserver.org/html/lvs-users/2004-12/msg00015.html
Is this really needed? What about using this sysctl variables:
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
A quick test seemed to work for me.
-Michael
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