proxy: fix IP limit handling

proxy/main.go

@@ -39,6 +39,7 @@ func accessHandler(next http.Handler) http.Handler {
 		for _, allowedIP := range setting.allowedIPs {
 			if requestIp == allowedIP {
 				next.ServeHTTP(httpW, httpR)
+				return
 			}
 		}
 
@@ -99,4 +100,3 @@ func main() {
 	http.HandleFunc("/traceroute6", tracerouteIPv6Wrapper)
 	http.ListenAndServe(*listenParam, handlers.LoggingHandler(os.Stdout, accessHandler(http.DefaultServeMux)))
 }
-