From 066e5cdaa0d28a0efa7931a1d324013a0a7db8c6 Mon Sep 17 00:00:00 2001
From: Jeremy Lainé <jeremy.laine@m4x.org>
Date: Wed, 26 Aug 2015 21:16:01 +0200
Subject: exclude loopback addresses

---
 src/base/QXmppStun.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/base/QXmppStun.cpp')

diff --git a/src/base/QXmppStun.cpp b/src/base/QXmppStun.cpp
index d41231ac..b8313881 100644
--- a/src/base/QXmppStun.cpp
+++ b/src/base/QXmppStun.cpp
@@ -118,6 +118,11 @@ static bool isIPv6LinkLocalAddress(const QHostAddress &addr)
     return (((ipv6addr[0] << 8) + ipv6addr[1]) & 0xffc0) == 0xfe80;
 }
 
+static bool isLoopbackAddress(const QHostAddress &addr)
+{
+    return (addr.toIPv4Address() & 0xff000000) == 0x7f000000;
+}
+
 static bool decodeAddress(QDataStream &stream, quint16 a_length, QHostAddress &address, quint16 &port, const QByteArray &xorId = QByteArray())
 {
     if (a_length < 4)
@@ -2427,6 +2432,11 @@ QList<QHostAddress> QXmppIceComponent::discoverAddresses()
                 entry.netmask().isNull())
                 continue;
 
+            // FIXME: for some reason we can have loopback addresses
+            // even if the interface does not have the loopback flag
+            if (isLoopbackAddress(ip))
+                continue;
+
             // FIXME: for now skip IPv6 link-local addresses, seems to upset
             // clients such as empathy
             if (isIPv6LinkLocalAddress(ip)) {
-- 
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