Comment 14 for bug 1237807

Since this discussion has implication on similar features in routers and agents, I'd to offer my opinion (uninformed as it might be):
Routers, networks (private, external, or shared), and agents provide bottle-necks allowing admins to shut down connectivity, the same way as, in the real world, a network-admin might shut down a switch or a router for temporary maintenance and bring it back up.
During shut-down the implied and expected result is that all traffic via bottle neck is broken.
So I believe that this feature is necessary and shouldn't be deprecated. Also, that all affected ports (VMs, floating ips, dhcp, etc...) should reflect this state in their status.