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I would like to set up Packstack with provider networks

asked 2017-06-26 15:16:42 -0500

tiger gravatar image

Just blew away my lab system for the eleventy-third time. Going to try "provider" networks this time around. Who knows, maybe I'll get lucky with it. I have a host with four Ethernet cards. Would like to end up with VM's that transparently have access to the host's Ethernet cards without any BS about neutron nor plugins nor agents nor INI files.

em1 will have The host is .217 I want the VMs to come up seeing em1 and being assigned .218, .219, .220 etc via DHCP To make this happen, OpenStack would have to listen out for ARP requests for these other IP addresses. I assume it can do that without too much pain.

Oh, and the documentation on the topic is crap. Thanks in advance.

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Hi there. Thank you for your reply. Unfortunately, this "method should allow any machine on the network to be able to access launched instances via their floating IPs" for me is a non-starter. Floating IPs is neat, with bidirectional NAT taking place, but we can't use it unless it will also modify

tiger gravatar imagetiger ( 2017-07-23 14:29:53 -0500 )edit

IP addresses in the SIP header. I am getting along with "self-service" networks by creating a flat external and a VXLAN private. Then in the host, add a route that uses the router IP as a gateway to access the private. So if the private network is and the router gateway is

tiger gravatar imagetiger ( 2017-07-23 14:32:35 -0500 )edit

Then on the host I have "route add -net gw br-ex" and then I can SSH into a VM via its private network address, e.g. "ssh root@". No need for floating IP or "ip netns exec" or other nonsense like that. Bringing up VM that can access the host Ethernet is the goal

tiger gravatar imagetiger ( 2017-07-23 14:34:31 -0500 )edit

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answered 2017-06-27 09:22:19 -0500


Go through with the below link, It would be helpful to configure Provider network in the Packstack (

Let us if it works with you

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Sorry, I replied in the wrong place. The provided link does not address the objective of passing through access to the host's physical / actual Ethernet interfaces. Like everything else I stumbled onto, it drives off into the woods with floating IP and other such nonsense.

tiger gravatar imagetiger ( 2017-07-24 10:18:40 -0500 )edit

I've gotten floating IP to work. It's OK for granting SSH access but no one would seriously offer access to the outside world into a VM using a floating IP.

tiger gravatar imagetiger ( 2017-07-24 10:19:25 -0500 )edit

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Asked: 2017-06-26 15:16:42 -0500

Seen: 253 times

Last updated: Jun 26 '17