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Neutron Static IP

It occurs to me that, using a provider network and a physical NIC on each compute node, I can statically assign IP's to my instances and forget about DHCP and L3 agent.

Does anyone see a problem with this? Am I losing any of OpenStack's functionality by doing things this way (aside from everything that L3 agent provides)? WIll migrations still work properly?

Will neutron still let me assign virtual NICs to instances if the network they attach to is created with --disable-dhcp?

Thanks, Marc