migration func to remove internet egress range from egress gateway

logic/gateway.go

@@ -79,12 +79,8 @@ func CreateEgressGateway(gateway models.EgressGatewayRequest) (models.Node, erro
 	}
 	for i := len(gateway.Ranges) - 1; i >= 0; i-- {
 		// check if internet gateway IPv4
-		if gateway.Ranges[i] == "0.0.0.0/0" && FreeTier {
-			return models.Node{}, fmt.Errorf("currently IPv4 internet gateways are not supported on the free tier: %s", gateway.Ranges[i])
-		}
-		// check if internet gateway IPv6
-		if gateway.Ranges[i] == "::/0" {
-			return models.Node{}, fmt.Errorf("currently IPv6 internet gateways are not supported: %s", gateway.Ranges[i])
+		if gateway.Ranges[i] == "0.0.0.0/0" || gateway.Ranges[i] == "::/0" {
+			return models.Node{}, fmt.Errorf("create internet gateways on the remote client gateway")
 		}
 		normalized, err := NormalizeCIDR(gateway.Ranges[i])
 		if err != nil {

migrate/migrate.go

@@ -18,6 +18,7 @@ func Run() {
 	updateEnrollmentKeys()
 	assignSuperAdmin()
 	updateHosts()
+	updateNodes()
 }
 
 func assignSuperAdmin() {
@@ -137,3 +138,31 @@ func updateHosts() {
 		}
 	}
 }
+
+func updateNodes() {
+	nodes, err := logic.GetAllNodes()
+	if err != nil {
+		slog.Error("migration failed for nodes", "error", err)
+		return
+	}
+	for _, node := range nodes {
+		if node.IsEgressGateway {
+			egressRanges, update := removeInterGw(node.EgressGatewayRanges)
+			if update {
+				node.EgressGatewayRanges = egressRanges
+				logic.UpsertNode(&node)
+			}
+		}
+	}
+}
+
+func removeInterGw(egressRanges []string) ([]string, bool) {
+	update := false
+	for i := len(egressRanges) - 1; i >= 0; i-- {
+		if egressRanges[i] == "0.0.0.0/0" || egressRanges[i] == "::/0" {
+			update = true
+			egressRanges = append(egressRanges[:i], egressRanges[i+1:]...)
+		}
+	}
+	return egressRanges, update
+}