[Swan-dev] Two identical networks

[Antony Antony]

are you trying to run two tests concurrently?
In Docker setup bridges (on the host) have no IP address configured. So bridge with no ip address and namespace isolates the tests.

In the past few days I tried similar trick with KVM.  There is no IP address on swan112 which seems to work. I just started a testrun with two instances.

east, west, road.., swan12 ...
east1, west1, road1.., swan112...

so far it appears to work. I will know more tomorrow. 

-antony


On Sat, May 21, 2016 at 12:03:08PM -0400, Andrew Cagney wrote:
> Part question, part FYI.
> 
> It turns out that cloning the borg (i.e., duplicating the test domain
> collective), is both easy and fast.
> 
> Where things break down is in the networking.  At present the networks
> and bridges are all visible and have static addresses.  Trying to
> duplicate this, keeping our borgs isolated, fails.  Funny enough virsh
> doesn't let us create two bridge interfaces where each has the same
> static addresses.
> 
> I believe the "fix" is to use
> https://libvirt.org/formatnetwork.html#examplesNoGateway or
> https://www.virtualbox.org/manual/ch06.html#network_internal but that
> means no automatic routing between bridges and that, in turn, means
> adding a "hub" VM (or adding to NAT's convoluted and growing task
> load).
> 
> Is this true, or is there another way?  I also suspect that docker
> et.al. will have the same problem?
> 
> Andrew
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