From 1023637da371597ec0868de48a01243516faff2a Mon Sep 17 00:00:00 2001
From: ukanth <cumakt@gmail.com>
Date: Sat, 19 Oct 2019 19:06:57 +0530
Subject: [PATCH] Nullpointer exception when ipv6 is disabled

---
 aFWall/src/main/java/dev/ukanth/ufirewall/Api.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/aFWall/src/main/java/dev/ukanth/ufirewall/Api.java b/aFWall/src/main/java/dev/ukanth/ufirewall/Api.java
index c874a6934..87b86ac36 100644
--- a/aFWall/src/main/java/dev/ukanth/ufirewall/Api.java
+++ b/aFWall/src/main/java/dev/ukanth/ufirewall/Api.java
@@ -897,11 +897,13 @@ public static void applySavedIptablesRules(Context ctx, boolean showErrors, Root
         }
 
         t1.start();
-        t2.start();
+        if (G.enableIPv6()) {
+            t2.start();
+        }
 
         try {
             t1.join();
-            if (t2 != null) {
+            if (G.enableIPv6() && t2 != null) {
                 t2.join();
             }
         } catch (InterruptedException e) {