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
