diff --git a/manager/allocator/cnmallocator/drivers.go b/manager/allocator/cnmallocator/drivers.go
new file mode 100644
index 0000000000..9bdbea9bc7
--- /dev/null
+++ b/manager/allocator/cnmallocator/drivers.go
@@ -0,0 +1,25 @@
+package cnmallocator
+
+import (
+	"fmt"
+
+	"github.com/docker/docker/libnetwork/driverapi"
+	"github.com/docker/docker/libnetwork/drivers/remote"
+)
+
+type driverRegisterFn func(r driverapi.Registerer, config map[string]interface{}) error
+
+func registerRemote(r driverapi.Registerer, _ map[string]interface{}) error {
+	dc, ok := r.(driverapi.DriverCallback)
+	if !ok {
+		return fmt.Errorf(`failed to register "remote" driver: driver does not implement driverapi.DriverCallback`)
+	}
+	return remote.Register(dc, dc.GetPluginGetter())
+}
+
+//nolint:unused // is currently only used on Windows, but keeping these adaptors together in one file.
+func registerNetworkType(networkType string) func(dc driverapi.Registerer, config map[string]interface{}) error {
+	return func(r driverapi.Registerer, _ map[string]interface{}) error {
+		return RegisterManager(r, networkType)
+	}
+}
diff --git a/manager/allocator/cnmallocator/drivers_darwin.go b/manager/allocator/cnmallocator/drivers_darwin.go
index e7d3dbe710..5002492e92 100644
--- a/manager/allocator/cnmallocator/drivers_darwin.go
+++ b/manager/allocator/cnmallocator/drivers_darwin.go
@@ -2,13 +2,12 @@ package cnmallocator
 
 import (
 	"github.com/docker/docker/libnetwork/drivers/overlay/ovmanager"
-	"github.com/docker/docker/libnetwork/drivers/remote"
 	"github.com/moby/swarmkit/v2/manager/allocator/networkallocator"
 )
 
-var initializers = []initializer{
-	{remote.Init, "remote"},
-	{ovmanager.Init, "overlay"},
+var initializers = map[string]driverRegisterFn{
+	"remote":  registerRemote,
+	"overlay": ovmanager.Register,
 }
 
 // PredefinedNetworks returns the list of predefined network structures
diff --git a/manager/allocator/cnmallocator/drivers_network_linux.go b/manager/allocator/cnmallocator/drivers_network_linux.go
index 5ae9196977..655cff846b 100644
--- a/manager/allocator/cnmallocator/drivers_network_linux.go
+++ b/manager/allocator/cnmallocator/drivers_network_linux.go
@@ -6,17 +6,16 @@ import (
 	"github.com/docker/docker/libnetwork/drivers/ipvlan/ivmanager"
 	"github.com/docker/docker/libnetwork/drivers/macvlan/mvmanager"
 	"github.com/docker/docker/libnetwork/drivers/overlay/ovmanager"
-	"github.com/docker/docker/libnetwork/drivers/remote"
 	"github.com/moby/swarmkit/v2/manager/allocator/networkallocator"
 )
 
-var initializers = []initializer{
-	{remote.Init, "remote"},
-	{ovmanager.Init, "overlay"},
-	{mvmanager.Init, "macvlan"},
-	{brmanager.Init, "bridge"},
-	{ivmanager.Init, "ipvlan"},
-	{host.Init, "host"},
+var initializers = map[string]driverRegisterFn{
+	"remote":  registerRemote,
+	"overlay": ovmanager.Register,
+	"macvlan": mvmanager.Register,
+	"bridge":  brmanager.Register,
+	"ipvlan":  ivmanager.Register,
+	"host":    host.Register,
 }
 
 // PredefinedNetworks returns the list of predefined network structures
diff --git a/manager/allocator/cnmallocator/drivers_network_windows.go b/manager/allocator/cnmallocator/drivers_network_windows.go
index abc6c44aac..de4abe21e7 100644
--- a/manager/allocator/cnmallocator/drivers_network_windows.go
+++ b/manager/allocator/cnmallocator/drivers_network_windows.go
@@ -2,16 +2,15 @@ package cnmallocator
 
 import (
 	"github.com/docker/docker/libnetwork/drivers/overlay/ovmanager"
-	"github.com/docker/docker/libnetwork/drivers/remote"
 	"github.com/moby/swarmkit/v2/manager/allocator/networkallocator"
 )
 
-var initializers = []initializer{
-	{remote.Init, "remote"},
-	{ovmanager.Init, "overlay"},
-	{StubManagerInit("internal"), "internal"},
-	{StubManagerInit("l2bridge"), "l2bridge"},
-	{StubManagerInit("nat"), "nat"},
+var initializers = map[string]driverRegisterFn{
+	"remote":   registerRemote,
+	"overlay":  ovmanager.Register,
+	"internal": registerNetworkType("internal"),
+	"l2bridge": registerNetworkType("l2bridge"),
+	"nat":      registerNetworkType("nat"),
 }
 
 // PredefinedNetworks returns the list of predefined network structures
diff --git a/manager/allocator/cnmallocator/manager.go b/manager/allocator/cnmallocator/manager.go
index bfc0e9a7af..e285ac4e0f 100644
--- a/manager/allocator/cnmallocator/manager.go
+++ b/manager/allocator/cnmallocator/manager.go
@@ -11,19 +11,18 @@ type manager struct {
 	networkType string
 }
 
-func StubManagerInit(networkType string) func(dc driverapi.DriverCallback, config map[string]interface{}) error {
-	return func(dc driverapi.DriverCallback, config map[string]interface{}) error {
+func StubManagerInit(networkType string) func(dc driverapi.DriverCallback, _ map[string]interface{}) error {
+	return func(dc driverapi.DriverCallback, _ map[string]interface{}) error {
 		return RegisterManager(dc, networkType)
 	}
 }
 
-// Register registers a new instance of the manager driver for networkType with r.
-func RegisterManager(r driverapi.DriverCallback, networkType string) error {
-	c := driverapi.Capability{
+// RegisterManager registers a new instance of the manager driver for networkType with r.
+func RegisterManager(r driverapi.Registerer, networkType string) error {
+	return r.RegisterDriver(networkType, &manager{networkType: networkType}, driverapi.Capability{
 		DataScope:         datastore.LocalScope,
 		ConnectivityScope: datastore.LocalScope,
-	}
-	return r.RegisterDriver(networkType, &manager{networkType: networkType}, c)
+	})
 }
 
 func (d *manager) NetworkAllocate(id string, option map[string]string, ipV4Data, ipV6Data []driverapi.IPAMData) (map[string]string, error) {
diff --git a/manager/allocator/cnmallocator/networkallocator.go b/manager/allocator/cnmallocator/networkallocator.go
index 9aae338fa2..deb0cc706d 100644
--- a/manager/allocator/cnmallocator/networkallocator.go
+++ b/manager/allocator/cnmallocator/networkallocator.go
@@ -81,11 +81,6 @@ type networkDriver struct {
 	capability *driverapi.Capability
 }
 
-type initializer struct {
-	fn    drvregistry.InitFunc
-	ntype string
-}
-
 // NetworkConfig is used to store network related cluster config in the Manager.
 type NetworkConfig struct {
 	// DefaultAddrPool specifies default subnet pool for global scope networks
@@ -115,8 +110,10 @@ func New(pg plugingetter.PluginGetter, netConfig *NetworkConfig) (networkallocat
 		return nil, err
 	}
 
-	if err := initializeDrivers(reg); err != nil {
-		return nil, err
+	for name, register := range initializers {
+		if err := register(reg, nil); err != nil {
+			return nil, fmt.Errorf("failed to register %q driver: %w", name, err)
+		}
 	}
 
 	if err = initIPAMDrivers(reg, netConfig); err != nil {
@@ -978,15 +975,6 @@ func (na *cnmNetworkAllocator) allocatePools(n *api.Network) (map[string]string,
 	return pools, nil
 }
 
-func initializeDrivers(reg *drvregistry.DrvRegistry) error {
-	for _, i := range initializers {
-		if err := reg.AddDriver(i.ntype, i.fn, nil); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 func serviceNetworks(s *api.Service) []*api.NetworkAttachmentConfig {
 	// Always prefer NetworkAttachmentConfig in the TaskSpec
 	if len(s.Spec.Task.Networks) == 0 && len(s.Spec.Networks) != 0 {
@@ -1010,13 +998,8 @@ func (na *cnmNetworkAllocator) IsVIPOnIngressNetwork(vip *api.Endpoint_VirtualIP
 
 // IsBuiltInDriver returns whether the passed driver is an internal network driver
 func IsBuiltInDriver(name string) bool {
-	n := strings.ToLower(name)
-	for _, d := range initializers {
-		if n == d.ntype {
-			return true
-		}
-	}
-	return false
+	_, ok := initializers[strings.ToLower(name)]
+	return ok
 }
 
 // setIPAMSerialAlloc sets the ipam allocation method to serial