if unset http_proxy, will encounter another problem which is on https://bugs.launchpad.net/devstack/+bug/1092783, i met it on ubuntu12.10 ubunt11.10 and fedora17, they are all vitual machines.
if unset http_proxy, will encounter another problem which is on https:/ /bugs.launchpad .net/devstack/ +bug/1092783, i met it on ubuntu12.10 ubunt11.10 and fedora17, they are all vitual machines.