Unable to upload image to openshift-virtualization-os-images namespace: error uploading image after 5 retries: unexpected return value 401

Issue

• Uploading an image to openshift-virtualization-os-images using virtctl fails with:

error uploading image after 5 retries: unexpected return value 401,

• Very little data is transferred, slow speed, the connection stalls. Client socket Send Queue during image upload and TCP window full:

# netstat -tnp | grep virtctl
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q  Local Address           Foreign Address         State       PID/Program name    
tcp        0 1165848 192.168.2.103:34704     192.168.3.53:443        ESTABLISHED 31637/virtctl       

• In cdi-uploadproxy proxy logs, the following appears when trying to upload:

E0112 00:03:58.844091       1 uploadproxy.go:322] Error in reverse proxy: http: proxy error: dial tcp 172.30.162.195:443: connect: connection timed out