Script for port forwarding
cp qemu /etc/libvirt/hooks/qemu
cp server_port_map /etc/libvirt/hooks/server_port_map
chmod +x /etc/libvirt/hooks/qemu
Edit hostif and optional hostip variables (read the comment above the variable) in /etc/libvirt/hooks/qemu
Edit /etc/libvirt/hooks/server_port_map
vm_name;remote_ip;remote_port;vm_ip;local_port