How does br-ex connect to inet

asked 2019-04-25 09:06:11 -0500

cw gravatar image

I use https://docs.openstack.org/devstack/latest/guides/single-machine.html (devstack) to install openstack with demo. It build two networks: public and private. Although I can attach VM to the private network and access inet from the VM, I don't know how packages move from VM to physical interface. There are two strange things for me.
1. ovs-vsctl shows the br-ex doesn't connect to any physical interface
2. the qg-xxx port of the router which connect public and private network doesn't connect to br-ex

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