Hi Vincent,

Your initial observation is correct: each port is associated with a Neutron network, and will get one IPv4 and one IPv6 address from the subnets associated with that network.

To add additional IPs to a port, you can use the allowed-address-pairs extension. 

Regards, 
     Neil 


From: Vincent.Chao
Sent: Tuesday, 6 December 2016 06:43
To: OpenStack Development Mailing List (not for usage questions)
Reply To: OpenStack Development Mailing List (not for usage questions)
Subject: [openstack-dev] [neutron] Is it possible that creating a port and binding it with 2 IPs

Hi Neutrons,

As my observation from the flow table, every created port seems bound with only one IP address. 
I was wondering is neutron support this function which can bind a port with two IPs?

For example, a VNF load balancer, which has a VIP and a real IP.
And this VNF receives packets with the destination of a VIP or a real IP through one port.

Any corrections or suggestions are welcome.
Thanks in advance.

Vincent

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