##### VERIFICATION FLAMINGO UCA ########
# Without the patch
Create a port, change the vif_type to tap, create a VM using that port.
VM creation fails with:
2026-07-27 11:57:49.937 37545 ERROR nova.virt.libvirt.guest
libvirt.libvirtError: Requested operation is not valid: The tap92b16d78-d8
interface already exists
# With the patch
1. Enable proposed repository.
2. Install the package with the fix from proposed.
ii nova-api-metadata 3:32.0.0-0ubuntu1.3~cloud1
all OpenStack Compute - metadata API frontend
ii nova-common 3:32.0.0-0ubuntu1.3~cloud1
all OpenStack Compute - common files
ii nova-compute 3:32.0.0-0ubuntu1.3~cloud1
all OpenStack Compute - compute node base
ii nova-compute-kvm 3:32.0.0-0ubuntu1.3~cloud1
all OpenStack Compute - compute node (KVM)
ii nova-compute-libvirt 3:32.0.0-0ubuntu1.3~cloud1
all OpenStack Compute - compute node libvirt support
ii python3-nova 3:32.0.0-0ubuntu1.3~cloud1
all OpenStack Compute Python 3 libraries
ii python3-novaclient 2:18.11.0-0ubuntu1~cloud0
all client library for OpenStack Compute API - 3.x
3. Create a new port.
$ openstack port create --network 101c1d77-4321-4d7a-b2e4-5d06dcb907b7
my-patched-tap-port
4. Change the vif_type of that port.
UPDATE ml2_port_bindings
SET vif_type = 'tap',
host = 'juju-bd582e-flamingo2-9',
status = 'ACTIVE'
WHERE port_id = 'bacbd4b7-c846-4198-bbf1-bf47dbbae8b6';
5. Create a VM.
$ openstack server create --flavor m1.small --image cirros --port
bacbd4b7-c846-4198-bbf1-bf47dbbae8b6 --key-name my-key my-patched-tap-vm
6. VM is able to start and is in ACTIVE state.
| 1f4f3d57-9626-4abb-a334-458bca4a7359 | my-patched-tap-vm | ACTIVE |
private=192.168.21.44 | cirros | m1.small |
** Tags removed: verification-flamingo-needed
** Tags added: verification-flamingo-done
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https://bugs.launchpad.net/bugs/2033681
Title:
Calico still uses vif type tap and it causes failures with libvirt
9.5.0
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