ipv6 disable option (#2)

README.md

@@ -59,6 +59,8 @@ The bouncer configuration is made via environment variables:
 | `MIKROTIK_USER`            | Mikrotik appliance username                                                                                        | `none`                  |    ✅     |
 | `MIKROTIK_PASS`            | Mikrotik appliance password                                                                                        | `none`                  |    ✅     |
 | `MIKROTIK_TLS`             | User TLS to connect to Mikrotik API                                                                                | `true`                  |    ❌     |
+| `MIKROTIK_IPV6`            | Enable / Disable IPv6 support                                                                                      | `true`                  |    ❌     |
+
 
 
 # Contribution

config.go

@@ -16,6 +16,7 @@ var (
 	password              string
 	async                 bool
 	useTLS                bool
+	useIPV6               bool
 )
 
 func initConfig() {
@@ -29,6 +30,8 @@ func initConfig() {
 	viper.BindEnv("mikrotik_pass")
 	viper.BindEnv("mikrotik_tls")
 	viper.SetDefault("mikrotik_tls", "true")
+	viper.BindEnv("mikrotik_ipv6")
+	viper.SetDefault("mikrotik_ipv6", "true")
 
 	logLevel = viper.GetString("log_level")
 	level, err := zerolog.ParseLevel(logLevel)
@@ -58,5 +61,6 @@ func initConfig() {
 	}
 
 	useTLS = viper.GetBool("mikrotik_tls")
+	useIPV6 = viper.GetBool("mikrotik_ipv6")
 	log.Printf("Using config: %+v", viper.AllSettings())
 }

mikrotik.go

@@ -34,7 +34,11 @@ func (mal *mikrotikAddrList) initMikrotik() {
 
 	mal.cache = make(map[string]string)
 
-	protos := []string{"ip", "ipv6"}
+	protos := []string{"ip"}
+
+	if useIPV6 {
+		protos = append(protos, "ipv6")
+	}
 
 	for _, proto := range protos {
 		log.Info().Msgf("mikrotik %s list addr", proto)
@@ -43,7 +47,7 @@ func (mal *mikrotikAddrList) initMikrotik() {
 		if err != nil {
 			log.Fatal().Err(err).Msg("address-list print failed")
 		}
-		log.Info().Msgf("fill %d entry in internal addrList\n", len(r.Re))
+		log.Info().Msgf("fill %d entry in internal %s addrList", len(r.Re), proto)
 		for _, v := range r.Re {
 			mal.cache[v.Map["address"]] = v.Map[".id"]
 		}
@@ -56,7 +60,12 @@ func (mal *mikrotikAddrList) add(decision *models.Decision) {
 
 	var proto string
 	if strings.Contains(*decision.Value, ":") {
+		if !useIPV6 {
+			log.Info().Msgf("Ignore adding address %s (IPv6 disabled)", *decision.Value)
+			return
+		}
 		proto = "ipv6"
+
 	} else {
 		proto = "ip"
 	}
@@ -91,6 +100,10 @@ func (mal *mikrotikAddrList) remove(decision *models.Decision) {
 
 	var proto string
 	if strings.Contains(*decision.Value, ":") {
+		log.Info().Msgf("Ignore removing address %s (IPv6 disabled)", *decision.Value)
+		if !useIPV6 {
+			return
+		}
 		proto = "ipv6"
 	} else {
 		proto = "ip"