tst_QSocks5SocketEngine::udpTest() fails on 10.9

QT_PLUGIN_PATH=/Users/liangqi/qt/qt5-build/qtbase/plugins DYLD_LIBRARY_PATH=/Users/liangqi/qt/qt5-build/qtbase/lib${DYLD_LIBRARY_PATH:+:$DYLD_LIBRARY_PATH}  ./tst_qsocks5socketengine.app/Contents/MacOS/tst_qsocks5socketengine 
********* Start testing of tst_QSocks5SocketEngine *********
Config: Using QtTest library 5.2.2, Qt 5.2.2
...
FAIL!  : tst_QSocks5SocketEngine::udpTest() 'udpSocket.bind(QHostAddress("0.0.0.0"), 0)' returned FALSE. ()
   Loc: [/Users/liangqi/qt/qt5/qtbase/tests/auto/network/socket/qsocks5socketengine/tst_qsocks5socketengine.cpp(581)]
...
Totals: 82 passed, 1 failed, 0 skipped
********* Finished testing of tst_QSocks5SocketEngine *********