Hi, +cc back to the list Mark Steckel <mjs@fix.net> writes:

Hi Derek,

I solved the first networking issue by changing how Hetzner config'ed the /32 on the host. (They were scoping the IP to the gateway which was confusing OVirt.)

So now I'm trying to get the /29 working for the VMs... continue below.

Okay.. [snip]

In the case of Hetzner, they provide the /29 and expect that the gw, the first usable IP of the /29, will be on the host and not the router. At least this is what I get from their docs. Effectively.

/32 /32 router ----------- host ---- VMs /29 /29

To test things I manually created an alias on the ovirtmgmt dev for the /29 gw IP and can ping it from the outside world. So basic routing seems to route for the /29.

Since OVirt seems to be constrained on the network configs it can deal with, my question is how should I permanently config the /29 gw IP (ie on eth0 or ovirtmgmt) and what do I need to do to set up the /29 IPs for the VMs?

I've never tried setting multiple IPs on my ovirtmgmt bridge on the host. But you shouldn't have to do that. It's a bridge, after all, so all systems that sit on that bridge (which include your VMs) will be equivalent. In my case I have an external router that gets used for both of my networks (I have a 192.168 network as well as a full class-C but they share physical infrastructure). So my host only has a 192.168 address, my engine is on the class-C, and they talk to each other over the standard network. In your case it *SOUNDS* like you need to set up an internal router for the /29. The way I would do it would be: /32 /32 /29 bridge +--- host (/29) ISP-Router ------- internal-router ----------+--- VM (/29) +--- VM (/29) I don't know if you can actually do this. If not, your other option would be: /32 bridge +--- host (/32) router -----------+--- VM Router (/29) (pfsense?) +--- VM (/29) This may not work for you, either, depending. WORST case you may need to manually configure a second IP on the ovirtmgmt bridge on your host: /32 bridge +--- host (/32 + /29) router -----------+--- VM (/29) +--- VM (/29) I would do this by manually creating the config file on your host: /etc/sysconfig/network-scripts/ifcfg-ovirtmgmt:0

Thanks Mark

-derek -- Derek Atkins 617-623-3745 derek@ihtfp.com www.ihtfp.com Computer and Internet Security Consultant