Linux interface networking bride configuration to test KVM nested VM

For testing purposes, I'm setting up an Azure VM Oracle Linux to test KVM. I attach 2 NIC. One primary with a single ipconfig, and a secon one NIC with a 10 ipconfigs. When I start the VM I see the 2 interfaces with the IPs configured.

1. Are we able to manage the Azure VM network configuration. It seems the network configuration is managed by cloud-init but changes on cloud-init VM regarding network doesn't take effect.
2. Also, if I manually add the configuration bridge in /etc/sysconfig/network-scripts, IP's remains in eth1 when I set the specific IP's for the bridge. I can see the same IP's on the eth1 and on the related bridge.
3. Is it possible to have VM inside VM's?

Thanks!