ipv4 and ipv6 network test

cmd/zurg/main.go

@@ -9,7 +9,8 @@ import (
 )
 
 func main() {
-	var configPath string // Variable to hold the config path
+	var configPath string  // Variable to hold the config path
+	var netTestType string // Variable to hold the network test type
 
 	var rootCmd = &cobra.Command{
 		Use: "zurg",
@@ -33,9 +34,11 @@ func main() {
 		Use:   "network-test",
 		Short: "Run a network test",
 		Run: func(cmd *cobra.Command, args []string) {
-			internal.NetworkTest()
+			internal.NetworkTest(netTestType) // Pass the network test type to NetworkTest
 		},
 	}
+	// Adding a flag for network test type with default value "both"
+	networkTestCmd.Flags().StringVarP(&netTestType, "type", "t", "both", "network test type (ipv4, ipv6, both)")
 
 	var clearDownloadsCmd = &cobra.Command{
 		Use:   "clear-downloads",