Why attaching multiple nics on same network to an instance fails?

Solution Unverified - Updated -

Issue

  • Booting VM instance with multiple network interfaces connected to the same network fails with below error.
nova boot --image=<image> --nic net-id=<network_A_uuid>        --nic net-id=<network_A_uuid>        <instance_name>
nova boot --image=<image> --nic port-id=<port_1_from_net_A> --nic port-id=<port_2_from_net_A> <instance_name>

ERROR (BadRequest): Network id is duplicated. (HTTP 400)

How can we resolve this?

Environment

  • Red Hat Enterprise Linux Openstack Platform 6.0

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