• Ensure that the TLE file specified in the SpaceSegment section exists and contains valid TLE data. sample.tle contains a sample TLE file. To build a synthetic single-plane constellation, use python3 Class/tle_generator.py <N> <output.tle> (see Class/README.md) or the MCP generate_tle tool.
• The clone_VM section is only required for type = 'vm' nodes.
• The Channels section allows you to define multiple communication links between nodes.
• libvirt implements DHCP, so if you want to avoid modifying the configuration of each VM to allocate a static IP:
  • Get the MAC address of the VM: $ virsh domiflist <VM_name>
  • Apply the DHCP rule: $ virsh net-edit default ```xml
  ... ``` - Restart the network, in this example `default`: `$ virsh net-destroy default` and `$ virsh net-start default` - Reboot the VM: `$ virsh shutdown ` and `$ virsh start `
• Be careful if a kernel-level VPN is up in the host, as it will affect the routing table and make VMs not reachable. In that case, consider disabling the VPN.