Running `packstack --allinone` should result in an environment with at least outbound external connectivity. Currently, packstack creates a floating ip network and sets up br-ex as the gateway for this network: 7: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN link/ether 3a:18:bb:22:71:4e brd ff:ff:ff:ff:ff:ff inet 172.24.4.225/28 scope global br-ex valid_lft forever preferred_lft forever inet6 fe80::3818:bbff:fe22:714e/64 scope link valid_lft forever preferred_lft forever Adding a NAT rule to the system would permit instances with access to the floating ip network to have outbound network access. Something like: iptables -A POSTROUTING -s 172.24.4.224/28 -j MASQUERADE
With an install on F21 using openstack-packstack-2014.2-0.18.dev1462.gbb05296.fc22.noarch, this (using the NAT solution) actually did the right thing: -P POSTROUTING ACCEPT -A POSTROUTING -j neutron-openvswi-POSTROUTING -A POSTROUTING -j neutron-postrouting-bottom -A POSTROUTING -s 172.24.4.224/28 -o eth0 -m comment --comment "000 nat" -j MASQUERADE -A POSTROUTING -j nova-api-POSTROUTING -A POSTROUTING -j nova-postrouting-bottom So I'm going to call this resolved.