@ruskofd is right. You should be able to use the cloud_network_config attribute to achieve this.
The following code is untested but should launch a vm with a static IP. Please see the xenorchestra_vm resource docs and the cloud-init networking v1 docs for more details.
resource "xenorchestra_vm" "static_ip_vm" {
....
cloud_network_config = <<EOF
network:
version: 1
config:
- type: physical
name: eth0
subnets:
- type: static
address: STATIC_IP/24
gateway: GATEWAY_IP
dns_nameservers:
- 8.8.8.8
EOF
}
Let me know if you have any questions or issues using cloud_network_config,
As for the blog post, the VM would have been assigned an ip address via dhcp (assuming the guest OS had cloud-init installed which was true for the VM template in the blog post).
