Hi, Swift proxy fails with Python 3.9 under Debian Unstable with Python 3.9: http://paste.openstack.org/show/802063/ (that's when doing a simple "openstack container list") I got the same problem with neutron-rpc-server: http://paste.openstack.org/show/802071/ (this happens when neutron-rpc-server tries to tell Nova that my new VM port is up) I didn't really look further, but I guess so many services are affected. This looks like general to OpenStack, and feels like yet-another-problem-with-eventlet, and looks very similar to this one: https://github.com/eventlet/eventlet/issues/677 even though that's here a Python 3.9 issue, not 3.7. I'd very much appreciate if some Eventlet specialist could look into this problem, because that's beyond my skills. Cheers, Thomas Goirand (zigo)