Open Stack

Hi all
    Currently, neutron model supports one router with one external network, which is used to connect router to outside world. FIP can be allocated from external network which is gateway of a router. One private fixed ip of one port(usually it is a vm port ) can only associate one floating ip.  In some deployment scenario, all ports served by one router, all ports need ip address which can be accessed by intranet, and some ports need ip address which can be accessed by internet. I was wondering how neutron to resolve this kind of use cases? One idea is one router support two external network(one for intranet, the other one for internet, but only have gateway), the other idea is one router still have only one external network, but this external have two different type of subnet (one for internet, the other one for intranet). any comment is welcome. thanks.
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