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Port all uses of iptables (in linux_net and libvirt_conn) over to use this new manager. It wraps all uses of iptables so that each component can maintain its own set of rules without interfering with other components and/or existing system rules. iptables-restore is an atomic interface to netfilter in the kernel. This means we can make a bunch of changes at a time, minimising the number of calls to iptables.
The Choose Your Own Adventure README for Nova: You have come across a cloud computing fabric controller. It has identified itself as "Nova." It is apparent that it maintains compatibility with the popular Amazon EC2 and S3 APIs. To monitor it from a distance: follow @novacc on twitter To tame it for use in your own cloud: read http://nova.openstack.org/getting.started.html To study its anatomy: read http://nova.openstack.org/architecture.html To dissect it in detail: visit http://code.launchpad.net/nova To taunt it with its weaknesses: use http://bugs.launchpad.net/nova To watch it: http://hudson.openstack.org To hack at it: read HACKING To laugh at its PEP8 problems: http://hudson.openstack.org/job/nova-pep8/violations To cry over its pylint problems: http://hudson.openstack.org/job/nova-pylint/violations