code: func ConfigGlobalScopeDefaultNetworks(defaultAddressPool []*NetworkToSplit) error {
  	if defaultAddressPool == nil {
  		defaultAddressPool = globalScopeDefaultNetworks
  	}
  	return configDefaultNetworks(defaultAddressPool, &PredefinedGlobalScopeDefaultNetworks)
  }
docs: // ConfigGlobalScopeDefaultNetworks configures global default pool.
  // Ideally this will be called from SwarmKit as part of swarm init