Comment 1 for bug 2056195

This appears to me a configuration issue as said in the exception :
 Error Cannot apply both stateful and stateless security groups on the same port at the same time while attempting the operation.,
 Neutron server returns request_ids: ['req-1007ffaa-3501-4566-9ad9-c540931138f0']

I don't think this is a bug in Nova, so closing the bug accordinly but feel free to reopen if if you can prove the contrary.