JoinMulticastGroup for all interfaces

UriahHeep

Hello.

I have Windows 7 with two interfaces (with IPv4 and IPv6). I want join both interfaces to multicast group, but joinMulticastGroup can't join both interfaces, and join only first interface. But, if I disable IPv6 on both interfaces joinMulticastGroup join all interfaces.

@QUdpSocket udpSocket;
QHostAddress groupAddress;

groupAddress = QHostAddress("239.255.255.250");
udpSocket.bind(QHostAddress::AnyIPv4, 1900,
QUdpSocket::ShareAddress | QUdpSocket::ReuseAddressHint);

QList<QNetworkInterface> mListIfaces = QNetworkInterface::allInterfaces();

for (int i = 0; i < mListIfaces.length(); ++i) {
qDebug() << udpSocket.joinMulticastGroup(groupAddress, mListIfaces.at(i));
}@

"This bug":https://bugreports.qt-project.org/browse/QTBUG-30949 described my problem.
How to solve this problem?