Load balancer now redirects packets destined for virtual servers to real
servers. However, for now we assume the locations of real servers have
been learnt.
mac -> location is hardcoded. will reset this commit later when ARP Proxy works fine.
ARP Proxy broadcasts ARP requests for real servers on start up.
So that the lb module can learn their locations. And ARP Proxy
adds static entries for them as well.
Eat ARP replies for real servers (only) on initialization. Other ARP replies will not be affected.
Don't need those hardcoded locations anymore.
Revert "mac -> location is hardcoded. will reset this commit later when ARP Proxy works fine."

This reverts commit 1e256d0b4b64592cc82395d3cb0aabad6f7f2f41.