Create a network with redundant router capability.
Create instances with the above network.
Update the network to Default Offering(DefaultIsolatedNetworkOfferingWithSourceNAT).
After successful update, one router is created which is as expected.
Try to restart the network with cleanup=true.
Two routers are created with redundant state UNKNOWN.
Note: - The similar behavior is seen when we update RVR to default.
After successful restart, only one router should be created