Void's global network is based on a Wireguard mesh between all servers. The network does not support ECMP. The mesh is statically computed by Ansible and is installed into the fleet when machines are added or removed.
The primary use case of the mesh is to allow us to run services that expect to be inside of a single broadcast domain without expending significant effort to enable machine to machine communication. As such, most services should be accessed via HTTP proxies rather than connecting to the mesh directly.