[Openstack-operators] [neutron] multiple external networks on the same host NIC

Mike Spreitzer mspreitz at us.ibm.com
Sat Apr 25 19:13:57 UTC 2015

Is there a way to create multiple external networks from Neutron's point 
of view, where both of those networks are accessed through the same host 
NIC?  Obviously those networks would be using different subnets.  I need 
this sort of thing because the two subnets are treated differently by the 
stuff outside of OpenStack, so I need a way that a tenant can get a 
floating IP of the sort he wants.  Since Neutron equates floating IP 
allocation pools with external networks, I need two external networks.

I found, for example, http://www.marcoberube.com/archives/248 --- which 
describes how to have multiple external networks but uses a distinct host 
network interface for each one.

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