diff --git a/api/models/v1_network_create_request.go b/api/models/v1_network_create_request.go
index 91a71be..59a435c 100644
--- a/api/models/v1_network_create_request.go
+++ b/api/models/v1_network_create_request.go
@@ -21,7 +21,7 @@ type V1NetworkCreateRequest struct {
 
 	// the addressfamilies in this network, either IPv4 or IPv6 or both
 	// Required: true
-	Addressfamily map[string]bool `json:"addressfamily" yaml:"addressfamily"`
+	Addressfamilies map[string]bool `json:"addressfamilies" yaml:"addressfamilies"`
 
 	// if privatesuper, this defines the bitlen of child prefixes per addressfamily if not nil
 	Defaultchildprefixlength map[string]int64 `json:"defaultchildprefixlength,omitempty" yaml:"defaultchildprefixlength,omitempty"`
@@ -82,7 +82,7 @@ type V1NetworkCreateRequest struct {
 func (m *V1NetworkCreateRequest) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	if err := m.validateAddressfamily(formats); err != nil {
+	if err := m.validateAddressfamilies(formats); err != nil {
 		res = append(res, err)
 	}
 
@@ -116,9 +116,9 @@ func (m *V1NetworkCreateRequest) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *V1NetworkCreateRequest) validateAddressfamily(formats strfmt.Registry) error {
+func (m *V1NetworkCreateRequest) validateAddressfamilies(formats strfmt.Registry) error {
 
-	if err := validate.Required("addressfamily", "body", m.Addressfamily); err != nil {
+	if err := validate.Required("addressfamilies", "body", m.Addressfamilies); err != nil {
 		return err
 	}
 
diff --git a/api/models/v1_network_immutable.go b/api/models/v1_network_immutable.go
index cd57205..5413375 100644
--- a/api/models/v1_network_immutable.go
+++ b/api/models/v1_network_immutable.go
@@ -22,7 +22,7 @@ type V1NetworkImmutable struct {
 
 	// the addressfamilies in this network, either IPv4 or IPv6 or both
 	// Required: true
-	Addressfamily map[string]bool `json:"addressfamily" yaml:"addressfamily"`
+	Addressfamilies map[string]bool `json:"addressfamilies" yaml:"addressfamilies"`
 
 	// if privatesuper, this defines the bitlen of child prefixes per addressfamily if not nil
 	Defaultchildprefixlength map[string]int64 `json:"defaultchildprefixlength,omitempty" yaml:"defaultchildprefixlength,omitempty"`
@@ -61,7 +61,7 @@ type V1NetworkImmutable struct {
 func (m *V1NetworkImmutable) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	if err := m.validateAddressfamily(formats); err != nil {
+	if err := m.validateAddressfamilies(formats); err != nil {
 		res = append(res, err)
 	}
 
@@ -91,9 +91,9 @@ func (m *V1NetworkImmutable) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *V1NetworkImmutable) validateAddressfamily(formats strfmt.Registry) error {
+func (m *V1NetworkImmutable) validateAddressfamilies(formats strfmt.Registry) error {
 
-	if err := validate.Required("addressfamily", "body", m.Addressfamily); err != nil {
+	if err := validate.Required("addressfamilies", "body", m.Addressfamilies); err != nil {
 		return err
 	}
 
diff --git a/api/models/v1_network_response.go b/api/models/v1_network_response.go
index dede7f3..676faf4 100644
--- a/api/models/v1_network_response.go
+++ b/api/models/v1_network_response.go
@@ -21,7 +21,7 @@ type V1NetworkResponse struct {
 
 	// the addressfamilies in this network, either IPv4 or IPv6 or both
 	// Required: true
-	Addressfamily map[string]bool `json:"addressfamily" yaml:"addressfamily"`
+	Addressfamilies map[string]bool `json:"addressfamilies" yaml:"addressfamilies"`
 
 	// the last changed timestamp of this entity
 	// Read Only: true
@@ -96,7 +96,7 @@ type V1NetworkResponse struct {
 func (m *V1NetworkResponse) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	if err := m.validateAddressfamily(formats); err != nil {
+	if err := m.validateAddressfamilies(formats); err != nil {
 		res = append(res, err)
 	}
 
@@ -142,9 +142,9 @@ func (m *V1NetworkResponse) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *V1NetworkResponse) validateAddressfamily(formats strfmt.Registry) error {
+func (m *V1NetworkResponse) validateAddressfamilies(formats strfmt.Registry) error {
 
-	if err := validate.Required("addressfamily", "body", m.Addressfamily); err != nil {
+	if err := validate.Required("addressfamilies", "body", m.Addressfamilies); err != nil {
 		return err
 	}
 
diff --git a/api/models/v1_network_usage.go b/api/models/v1_network_usage.go
index 982f6e4..c2baae2 100644
--- a/api/models/v1_network_usage.go
+++ b/api/models/v1_network_usage.go
@@ -21,19 +21,19 @@ type V1NetworkUsage struct {
 
 	// the total available IPs
 	// Required: true
-	AvailableIps *int64 `json:"available_ips" yaml:"available_ips"`
+	AvailableIps map[string]int64 `json:"available_ips" yaml:"available_ips"`
 
 	// the total available 2 bit Prefixes
 	// Required: true
-	AvailablePrefixes *int64 `json:"available_prefixes" yaml:"available_prefixes"`
+	AvailablePrefixes map[string]int64 `json:"available_prefixes" yaml:"available_prefixes"`
 
 	// the total used IPs
 	// Required: true
-	UsedIps *int64 `json:"used_ips" yaml:"used_ips"`
+	UsedIps map[string]int64 `json:"used_ips" yaml:"used_ips"`
 
 	// the total used Prefixes
 	// Required: true
-	UsedPrefixes *int64 `json:"used_prefixes" yaml:"used_prefixes"`
+	UsedPrefixes map[string]int64 `json:"used_prefixes" yaml:"used_prefixes"`
 }
 
 // Validate validates this v1 network usage
diff --git a/metal-api.json b/metal-api.json
index dce9ac8..f3c3bdd 100644
--- a/metal-api.json
+++ b/metal-api.json
@@ -3666,7 +3666,7 @@
     },
     "v1.NetworkCreateRequest": {
       "properties": {
-        "addressfamily": {
+        "addressfamilies": {
           "additionalProperties": {
             "type": "boolean"
           },
@@ -3752,7 +3752,7 @@
         }
       },
       "required": [
-        "addressfamily",
+        "addressfamilies",
         "destinationprefixes",
         "id",
         "nat",
@@ -3814,7 +3814,7 @@
     "v1.NetworkImmutable": {
       "description": "a network which contains prefixes from which IP addresses can be allocated\nprefixes that are reachable within this network",
       "properties": {
-        "addressfamily": {
+        "addressfamilies": {
           "additionalProperties": {
             "type": "boolean"
           },
@@ -3869,7 +3869,7 @@
         }
       },
       "required": [
-        "addressfamily",
+        "addressfamilies",
         "destinationprefixes",
         "nat",
         "prefixes",
@@ -3879,7 +3879,7 @@
     },
     "v1.NetworkResponse": {
       "properties": {
-        "addressfamily": {
+        "addressfamilies": {
           "additionalProperties": {
             "type": "boolean"
           },
@@ -3981,7 +3981,7 @@
         }
       },
       "required": [
-        "addressfamily",
+        "addressfamilies",
         "destinationprefixes",
         "id",
         "nat",
@@ -4038,24 +4038,32 @@
     "v1.NetworkUsage": {
       "properties": {
         "available_ips": {
+          "additionalProperties": {
+            "type": "integer"
+          },
           "description": "the total available IPs",
-          "format": "integer",
-          "type": "integer"
+          "type": "object"
         },
         "available_prefixes": {
+          "additionalProperties": {
+            "type": "integer"
+          },
           "description": "the total available 2 bit Prefixes",
-          "format": "integer",
-          "type": "integer"
+          "type": "object"
         },
         "used_ips": {
+          "additionalProperties": {
+            "type": "integer"
+          },
           "description": "the total used IPs",
-          "format": "integer",
-          "type": "integer"
+          "type": "object"
         },
         "used_prefixes": {
+          "additionalProperties": {
+            "type": "integer"
+          },
           "description": "the total used Prefixes",
-          "format": "integer",
-          "type": "integer"
+          "type": "object"
         }
       },
       "required": [