Learning OpenStack Networking - Third Edition

Reviewing the network plumbing

On the compute node hosting instance, a quick look at the bridges using brctl show does not reveal anything unique about the configuration that would support tagging within the instance:

However, a deeper look at the tap interface that corresponds to the sub-port reveals that the interface has been configured as a VLAN interface off the parent port using VLAN ID 42:

Performing a packet capture on the tap interface associated with the parent port, we can see traffic leaving the instance's sub-interface and through ...