when a instance created, a network interface call vnetX will be created and attach to that instance I find related info about this in nova/virt/libvirt/vif.py, ip and tunctl seem to be the tool to create that, but one of our compute node base on centos6.2, iproute is not support tuntap(show error when I run ip tuntap add) and uml-utilities(provide tunctl command) is not installed, but vnetX still be created when launch a instance my question is, how did vnetX created, doesn't nova code handle this, or this work belong to libvirt can I create this kind interface manually and attach to instance, how to do this Thanks -- William Herry ==================== WilliamHerryChina at Gmail.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20120606/e5ec1b3c/attachment.html>