Comment 1 for bug 1494776

dims, can you please be more specific on how to reproduce this?

unfortunately I can not install devstack with V3 only (various places are failing, seems that handling of ENABLE_IDENTITY_V2=False is not supported in DevStack for most of the services)

but using a standard install with both V2 and V3 when I do the following

$ export IDENTITY_API_VERSION=3
$ . /opt/stack/devstack/openrc admin admin
$ ironic --os-user-domain-name default --os-project-domain-name default driver-list

I see tokens being validated against V3 only