I am trying to understand the architecture of on how fixed-ip is assigned. Is it thro' Nova-network/neutron/dhcp ?. I tried stopping the dhcp-agent but still see fixed-ip is assigned for VM instance. Tried adding debugs in nova-network but nothing helped me point where the actual assignment is happening.

Pls note, my configuration is OVS, IP-GRE, Neutron on icehouse.