Hi Team,
I am looking at integrating openstack neutron with oVirt.
Reading the docs so far, and through my setup experiments, I can see that
oVirt and neutron do seem to understand each other.

But I need some helpful pointers to help me understand a few items
during configuration.

1) During External Provider registration,

a) although openstack keystone is currently supporting v3 api
endpoints, only configuring v2 works. I see an exception otherwise.I
have a feeling only v2 auth is supported with oVirt.

b) Interface mappings.
This I believe is a way for logical networks to switch/route traffic
back to physical networks. This is of the form label:interface. Where
label is placed on each Hosts network setting to point to the right
physical interface.

I did map label "red" when I setup Host networks to a physical Nic.
And used "red:br-red, green:br-green" here, wherein my intention is to
create a bridge br-red on each Host for this logical network and
switch/route packets over the "red" label mapped physical nic on each
host. And every vm attached to "red" logical network shall have a vnic
placed on "br-red" Is my understanding correct?

2) Now I finally create a logical network using external provider
"openstack neutron". Herein "Physical Network" parameter that I
totally do not understand.
If the registration were to have many interface mappings, is this a
way of pinning to the right interface?

I cannot choose, red, red:br-red... I can only leave it empty,

So what is the IP address of the physical address argument part of
logical network creation?

"Optionally select the Create on external provider check box. Select
the External Provider from the drop-down list and provide the IP
address of the Physical Network". What this field means?

I would appreciate some clarity and helpful pointers here.

Best regards

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