diff -r 3b1da2848fc7 -r d3bac044e0f0 src/network/kernel/qnetworkinterface.cpp
--- a/src/network/kernel/qnetworkinterface.cpp	Fri Feb 19 23:40:16 2010 +0200
+++ b/src/network/kernel/qnetworkinterface.cpp	Fri Mar 12 15:46:37 2010 +0200
@@ -541,7 +541,7 @@
 {
     QList<QSharedDataPointer<QNetworkInterfacePrivate> > privs = manager()->allInterfaces();
     QList<QNetworkInterface> result;
-    foreach (QSharedDataPointer<QNetworkInterfacePrivate> p, privs) {
+    foreach (const QSharedDataPointer<QNetworkInterfacePrivate> &p, privs) {
         QNetworkInterface item;
         item.d = p;
         result << item;
@@ -560,7 +560,7 @@
 {
     QList<QSharedDataPointer<QNetworkInterfacePrivate> > privs = manager()->allInterfaces();
     QList<QHostAddress> result;
-    foreach (const QSharedDataPointer<QNetworkInterfacePrivate> p, privs) {
+    foreach (const QSharedDataPointer<QNetworkInterfacePrivate> &p, privs) {
         foreach (const QNetworkAddressEntry &entry, p->addressEntries)
             result += entry.ip();
     }