From 256344c187a776d3d2d766da140336e8055d7efa Mon Sep 17 00:00:00 2001
From: M66B <marcel@faircode.eu>
Date: Sun, 21 Feb 2016 19:43:39 +0100
Subject: [PATCH] Filter loopback and any local DNS addresses

---
 app/src/main/java/eu/faircode/netguard/SinkholeService.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/eu/faircode/netguard/SinkholeService.java b/app/src/main/java/eu/faircode/netguard/SinkholeService.java
index 577ef5c5..5203c02d 100644
--- a/app/src/main/java/eu/faircode/netguard/SinkholeService.java
+++ b/app/src/main/java/eu/faircode/netguard/SinkholeService.java
@@ -871,7 +871,8 @@ public class SinkholeService extends VpnService implements SharedPreferences.OnS
         for (String def_dns : sysDns)
             try {
                 InetAddress ddns = InetAddress.getByName(def_dns);
-                if (!listDns.contains(ddns))
+                if (!listDns.contains(ddns) &&
+                        !(ddns.isLoopbackAddress() || ddns.isAnyLocalAddress()))
                     listDns.add(ddns);
             } catch (Throwable ignored) {
             }