You'll have to forgive me as I am not a particular expert with OpenStack, but I never did anything directly with Neutron as far as I know. The issue was always when using
$ openstack server remove port <server> <port>
from the command line as you said, and/or using neutron client SDK in Python:
neutc.delete_port(<port id>)
They both produce the same result of the failure to actually remove the interface from the KVM instance.
You'll have to forgive me as I am not a particular expert with OpenStack, but I never did anything directly with Neutron as far as I know. The issue was always when using
$ openstack server remove port <server> <port>
from the command line as you said, and/or using neutron client SDK in Python:
neutc. delete_ port(<port id>)
They both produce the same result of the failure to actually remove the interface from the KVM instance.