diff --git a/cmd/blockchaincmd/add_validator.go b/cmd/blockchaincmd/add_validator.go
index 8cec283dd..2c0631e8d 100644
--- a/cmd/blockchaincmd/add_validator.go
+++ b/cmd/blockchaincmd/add_validator.go
@@ -41,6 +41,7 @@ var (
 		networkoptions.Devnet,
 		networkoptions.Fuji,
 		networkoptions.Mainnet,
+		networkoptions.EtnaDevnet,
 	}
 
 	nodeIDStr                 string
@@ -128,18 +129,25 @@ func addValidator(_ *cobra.Command, args []string) error {
 		return err
 	}
 
+	sc, err := app.LoadSidecar(blockchainName)
+	if err != nil {
+		return fmt.Errorf("failed to load sidecar: %w", err)
+	}
+
+	networkOptionsList := networkoptions.GetNetworkFromSidecar(sc, addValidatorSupportedNetworkOptions)
 	network, err := networkoptions.GetNetworkFromCmdLineFlags(
 		app,
 		"",
 		globalNetworkFlags,
 		true,
 		false,
-		addValidatorSupportedNetworkOptions,
+		networkOptionsList,
 		"",
 	)
 	if err != nil {
 		return err
 	}
+
 	if network.ClusterName != "" {
 		clusterNameFlagValue = network.ClusterName
 		network = models.ConvertClusterToNetwork(network)
@@ -183,10 +191,6 @@ func addValidator(_ *cobra.Command, args []string) error {
 		return err
 	}
 
-	sc, err := app.LoadSidecar(blockchainName)
-	if err != nil {
-		return fmt.Errorf("failed to load sidecar: %w", err)
-	}
 	sovereign := sc.Sovereign
 
 	if sovereign && network.Kind == models.Mainnet {
diff --git a/cmd/blockchaincmd/change_weight.go b/cmd/blockchaincmd/change_weight.go
index 996d08153..a3fb5a949 100644
--- a/cmd/blockchaincmd/change_weight.go
+++ b/cmd/blockchaincmd/change_weight.go
@@ -48,24 +48,25 @@ func setWeight(_ *cobra.Command, args []string) error {
 		return err
 	}
 
+	sc, err := app.LoadSidecar(blockchainName)
+	if err != nil {
+		return fmt.Errorf("failed to load sidecar: %w", err)
+	}
+
+	networkOptionsList := networkoptions.GetNetworkFromSidecar(sc, removeValidatorSupportedNetworkOptions)
 	network, err := networkoptions.GetNetworkFromCmdLineFlags(
 		app,
 		"",
 		globalNetworkFlags,
 		true,
 		false,
-		removeValidatorSupportedNetworkOptions,
+		networkOptionsList,
 		"",
 	)
 	if err != nil {
 		return err
 	}
 
-	sc, err := app.LoadSidecar(blockchainName)
-	if err != nil {
-		return err
-	}
-
 	if network.Kind == models.Mainnet && sc.Sovereign {
 		return errNotSupportedOnMainnet
 	}
diff --git a/cmd/blockchaincmd/remove_validator.go b/cmd/blockchaincmd/remove_validator.go
index 61fc353a9..8a093c2ef 100644
--- a/cmd/blockchaincmd/remove_validator.go
+++ b/cmd/blockchaincmd/remove_validator.go
@@ -33,6 +33,7 @@ var removeValidatorSupportedNetworkOptions = []networkoptions.NetworkOption{
 	networkoptions.Devnet,
 	networkoptions.Fuji,
 	networkoptions.Mainnet,
+	networkoptions.EtnaDevnet,
 }
 
 // avalanche blockchain removeValidator
@@ -70,13 +71,19 @@ func removeValidator(_ *cobra.Command, args []string) error {
 		return err
 	}
 
+	sc, err := app.LoadSidecar(blockchainName)
+	if err != nil {
+		return err
+	}
+
+	networkOptionsList := networkoptions.GetNetworkFromSidecar(sc, removeValidatorSupportedNetworkOptions)
 	network, err := networkoptions.GetNetworkFromCmdLineFlags(
 		app,
 		"",
 		globalNetworkFlags,
 		true,
 		false,
-		removeValidatorSupportedNetworkOptions,
+		networkOptionsList,
 		"",
 	)
 	if err != nil {
@@ -101,11 +108,6 @@ func removeValidator(_ *cobra.Command, args []string) error {
 	}
 	network.HandlePublicNetworkSimulation()
 
-	sc, err := app.LoadSidecar(blockchainName)
-	if err != nil {
-		return err
-	}
-
 	if sc.Sovereign && network.Kind == models.Mainnet {
 		return errNotSupportedOnMainnet
 	}
diff --git a/pkg/networkoptions/network_options.go b/pkg/networkoptions/network_options.go
index b07b28211..3d75b94b4 100644
--- a/pkg/networkoptions/network_options.go
+++ b/pkg/networkoptions/network_options.go
@@ -51,21 +51,22 @@ func (n NetworkOption) String() string {
 }
 
 func NetworkOptionFromString(s string) NetworkOption {
-	switch s {
-	case "Mainnet":
+	switch {
+	case s == "Mainnet":
 		return Mainnet
-	case "Fuji Testnet":
+	case s == "Fuji Testnet":
 		return Fuji
-	case "Local Network":
+	case s == "Local Network":
 		return Local
-	case "Etna Devnet":
+	case s == "Etna Devnet":
 		return EtnaDevnet
-	case "Devnet":
+	case s == "Devnet" || strings.Contains(s, "Devnet"):
 		return Devnet
-	case "Cluster":
+	case s == "Cluster" || strings.Contains(s, "Cluster"):
 		return Cluster
+	default:
+		return Undefined
 	}
-	return Undefined
 }
 
 type NetworkFlags struct {
@@ -172,6 +173,21 @@ func GetSupportedNetworkOptionsForSubnet(
 	return filteredSupportedNetworkOptions, clusterNames, devnetEndpoints, nil
 }
 
+func GetNetworkFromSidecar(sc models.Sidecar, defaultOption []NetworkOption) []NetworkOption {
+	networkOptionsList := []NetworkOption{}
+	for scNetwork := range sc.Networks {
+		if NetworkOptionFromString(scNetwork) != Undefined {
+			networkOptionsList = append(networkOptionsList, NetworkOptionFromString(scNetwork))
+		}
+	}
+
+	// default network options to add validator options
+	if len(networkOptionsList) == 0 {
+		networkOptionsList = defaultOption
+	}
+	return networkOptionsList
+}
+
 func GetNetworkFromCmdLineFlags(
 	app *application.Avalanche,
 	promptStr string,
@@ -241,7 +257,8 @@ func GetNetworkFromCmdLineFlags(
 		}
 	}
 	// unsupported option
-	if networkOption != Undefined && !slices.Contains(supportedNetworkOptions, networkOption) {
+	// allow cluster because we can extract underlying network from cluster
+	if networkOption != Undefined && !slices.Contains(supportedNetworkOptions, networkOption) && networkOption != Cluster {
 		errMsg := fmt.Errorf("network flag %s is not supported. use one of %s", networkFlagsMap[networkOption], supportedNetworksFlags)
 		if subnetName != "" {
 			clustersMsg := ""