diff --git a/ipams/null/null.go b/ipams/null/null.go
index 339b5308d1..f623ce048d 100644
--- a/ipams/null/null.go
+++ b/ipams/null/null.go
@@ -24,19 +24,24 @@ func (a *allocator) GetDefaultAddressSpaces() (string, string, error) {
 }
 
 func (a *allocator) RequestPool(addressSpace, pool, subPool string, options map[string]string, v6 bool) (string, *net.IPNet, map[string]string, error) {
-	if addressSpace != defaultAS {
-		return "", nil, nil, types.BadRequestErrorf("unknown address space: %s", addressSpace)
+	if addressSpace == "" {
+		addressSpace = defaultAS
 	}
-	if pool != "" {
-		return "", nil, nil, types.BadRequestErrorf("null ipam driver does not handle specific address pool requests")
-	}
-	if subPool != "" {
-		return "", nil, nil, types.BadRequestErrorf("null ipam driver does not handle specific address subpool requests")
+
+	if pool == "" && subPool != "" {
+		return "", nil, nil, fmt.Errorf("subpool requires a pool to be configured")
 	}
-	if v6 {
-		return "", nil, nil, types.BadRequestErrorf("null ipam driver does not handle IPv6 address pool pool requests")
+
+	retPool := defaultPool
+	if pool != "" {
+		var err error
+		retPool, err = types.ParseCIDR(pool)
+		if err != nil {
+			return "", nil, nil, err
+		}
 	}
-	return defaultPoolID, defaultPool, nil, nil
+	retPoolID := fmt.Sprintf("%s/%s", addressSpace, retPool.String())
+	return retPoolID, retPool, nil, nil
 }
 
 func (a *allocator) ReleasePool(poolID string) error {
diff --git a/ipams/null/null_test.go b/ipams/null/null_test.go
index 79b31d50de..4ff2e4ceb6 100644
--- a/ipams/null/null_test.go
+++ b/ipams/null/null_test.go
@@ -21,14 +21,23 @@ func TestPoolRequest(t *testing.T) {
 		t.Fatalf("Unexpected pool id returned. Expected: %s. Got: %s", defaultPoolID, pid)
 	}
 
-	_, _, _, err = a.RequestPool("default", "", "", nil, false)
-	if err == nil {
-		t.Fatal("Unexpected success")
+	id, _, _, err := a.RequestPool("foo", "", "", nil, false)
+	if err != nil {
+		t.Fatal("Unexpected error")
+	}
+	if id != "foo/0.0.0.0/0" {
+		t.Fatal("Wrong id")
 	}
 
-	_, _, _, err = a.RequestPool(defaultAS, "192.168.0.0/16", "", nil, false)
-	if err == nil {
-		t.Fatal("Unexpected success")
+	id, p, _, err := a.RequestPool(defaultAS, "192.168.0.0/16", "", nil, false)
+	if err != nil {
+		t.Fatal("Unexpected error")
+	}
+	if id != defaultAS+"/192.168.0.0/16" {
+		t.Fatalf("Wrong id")
+	}
+	if p.String() != "192.168.0.0/16" {
+		t.Fatalf("Wrong pool")
 	}
 
 	_, _, _, err = a.RequestPool(defaultAS, "", "192.168.0.0/24", nil, false)
@@ -36,9 +45,20 @@ func TestPoolRequest(t *testing.T) {
 		t.Fatal("Unexpected success")
 	}
 
+	id, p, _, err = a.RequestPool(defaultAS, "192.168.0.0/16", "192.168.0.0/24", nil, false)
+	if err != nil {
+		t.Fatal("Unexpected error")
+	}
+	if id != defaultAS+"/192.168.0.0/16" {
+		t.Fatalf("Wrong id")
+	}
+	if p.String() != "192.168.0.0/16" {
+		t.Fatalf("Wrong pool")
+	}
+
 	_, _, _, err = a.RequestPool(defaultAS, "", "", nil, true)
-	if err == nil {
-		t.Fatal("Unexpected success")
+	if err != nil {
+		t.Fatal("Unexpected error")
 	}
 }