LVS-DR ssh service

[Con Tassios]

>> 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

The stock Red Hat Enterprise Linux 3 kernel does not include arp_ignore and 
arp_announce.