[openstack-dev] [Neutron] Default routes to SNAT gateway in DVR

henry hly henry4hly at gmail.com
Fri Jun 13 08:45:01 UTC 2014

Hi car1,

In the link:
 there is some words like " When the node is being scheduled to host the
SNAT, a new namespace and internal IP address will be assigned to host the
SNAT service.  Any nova instance VM that is connected to the router will
have this new SNAT IP as its external gateway address. "

Can nova VM see this secondary IP? I think that even in the node hosting
SNAT, IR still exists. So VM at this node will also see IP of the IR
interface, and send packet to IR first, next the IR will redirect the
traffic to SNAT in the same node (but in different namespace). Is that
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