tst_QUdpSocket fails on a new Ubuntu 16.04 template

********* Start testing of tst_QUdpSocket *********
Config: Using QtTest library 5.9.4, Qt 5.9.4 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 5.4.0 20160609)
PASS   : tst_QUdpSocket::initTestCase()
QWARN  : tst_QUdpSocket::constructing(WithoutProxy) QIODevice::read (QUdpSocket): device not open
PASS   : tst_QUdpSocket::constructing(WithoutProxy)
PASS   : tst_QUdpSocket::unconnectedServerAndClientTest(WithoutProxy)
FAIL!  : tst_QUdpSocket::broadcasting(WithoutProxy) 'dgram.isValid()' returned FALSE. ()
   Loc: [../tst_qudpsocket.cpp(400)]
PASS   : tst_QUdpSocket::loop(WithoutProxy:"Almond!" | "Joy!")
PASS   : tst_QUdpSocket::loop(WithoutProxy:"A" | "B")
PASS   : tst_QUdpSocket::loop(WithoutProxy:"AB" | "B")
PASS   : tst_QUdpSocket::loop(WithoutProxy:"AB" | "BB")
PASS   : tst_QUdpSocket::loop(WithoutProxy:"A\0B" | "B\0B")
PASS   : tst_QUdpSocket::loop(WithoutProxy:"(nil)" | "(nil)")
PASS   : tst_QUdpSocket::loop(WithoutProxy:Bigmessage)
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:"Almond!" | "Joy!")
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:"A" | "B")
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:"AB" | "B")
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:"AB" | "BB")
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:"A\0B" | "B\0B")
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:"(nil)" | "(nil)")
PASS   : tst_QUdpSocket::ipv6Loop(WithoutProxy:Bigmessage)
PASS   : tst_QUdpSocket::dualStack(WithoutProxy)
PASS   : tst_QUdpSocket::dualStackAutoBinding(WithoutProxy)
PASS   : tst_QUdpSocket::dualStackNoIPv4onV6only(WithoutProxy)
PASS   : tst_QUdpSocket::connectToHost(WithoutProxy)
PASS   : tst_QUdpSocket::bindAndConnectToHost(WithoutProxy)
FAIL!  : tst_QUdpSocket::pendingDatagramSize(WithoutProxy) Compared values are not the same
   Actual   (server.pendingDatagramSize()): 10
   Expected (qint64(0))                   : 0
   Loc: [../tst_qudpsocket.cpp(830)]
PASS   : tst_QUdpSocket::writeDatagram(WithoutProxy)
QDEBUG : tst_QUdpSocket::performance(WithoutProxy) 	18969.53MB/5.00s: 3793.91MB/s
PASS   : tst_QUdpSocket::performance(WithoutProxy)
PASS   : tst_QUdpSocket::bindMode(WithoutProxy)
PASS   : tst_QUdpSocket::writeDatagramToNonExistingPeer(WithoutProxy:localhost-unbound)
PASS   : tst_QUdpSocket::writeDatagramToNonExistingPeer(WithoutProxy:localhost-bound)
PASS   : tst_QUdpSocket::writeDatagramToNonExistingPeer(WithoutProxy:remote-unbound)
PASS   : tst_QUdpSocket::writeDatagramToNonExistingPeer(WithoutProxy:remote-bound)
SKIP   : tst_QUdpSocket::writeToNonExistingPeer(WithoutProxy:localhost) Connected-mode UDP sockets and their behaviour are erratic
   Loc: [../tst_qudpsocket.cpp(1028)]
SKIP   : tst_QUdpSocket::writeToNonExistingPeer(WithoutProxy:remote) Connected-mode UDP sockets and their behaviour are erratic
   Loc: [../tst_qudpsocket.cpp(1028)]
PASS   : tst_QUdpSocket::outOfProcessConnectedClientServerTest(WithoutProxy)
PASS   : tst_QUdpSocket::outOfProcessUnconnectedClientServerTest(WithoutProxy)
PASS   : tst_QUdpSocket::zeroLengthDatagram(WithoutProxy)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy:0.0.0.0 0)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy:0.0.0.0 1)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy:0.0.0.0 2)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy:0.0.0.0 128)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy:0.0.0.0 255)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy:0.0.0.0 1024)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy::: 0)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy::: 1)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy::: 2)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy::: 128)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy::: 255)
PASS   : tst_QUdpSocket::multicastTtlOption(WithoutProxy::: 1024)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 0)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 1)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 2)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 0 again)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 2 again)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 0 last time)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy:0.0.0.0 1 again)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 0)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 1)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 2)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 0 again)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 2 again)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 0 last time)
PASS   : tst_QUdpSocket::multicastLoopbackOption(WithoutProxy::: 1 again)
PASS   : tst_QUdpSocket::multicastJoinBeforeBind(WithoutProxy:valid ipv4 group address)
PASS   : tst_QUdpSocket::multicastJoinBeforeBind(WithoutProxy:invalid ipv4 group address)
PASS   : tst_QUdpSocket::multicastJoinBeforeBind(WithoutProxy:valid ipv6 group address)
PASS   : tst_QUdpSocket::multicastJoinBeforeBind(WithoutProxy:invalid ipv6 group address)
PASS   : tst_QUdpSocket::multicastLeaveAfterClose(WithoutProxy:ipv4)
PASS   : tst_QUdpSocket::multicastLeaveAfterClose(WithoutProxy:ipv6)
PASS   : tst_QUdpSocket::setMulticastInterface(WithoutProxy:lo:127.0.0.1)
PASS   : tst_QUdpSocket::setMulticastInterface(WithoutProxy:lo:::1)
PASS   : tst_QUdpSocket::setMulticastInterface(WithoutProxy:ens3:10.215.150.135)
PASS   : tst_QUdpSocket::setMulticastInterface(WithoutProxy:ens3:fe80::aeb7:347a:5876:38a3%ens3)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:valid bind, group ipv4 address)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:valid bind, invalid group ipv4 address)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:same bind, group ipv4 address)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:valid bind, group ipv6 address)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:valid bind, invalid group ipv6 address)
BPASS  : tst_QUdpSocket::multicast(WithoutProxy:same bind, group ipv6 address)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:dual bind, group ipv4 address)
PASS   : tst_QUdpSocket::multicast(WithoutProxy:dual bind, group ipv6 address)
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 1 out 0
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 2 out 1
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 3 out 2
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 4 out 3
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 5 out 4
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 6 out 5
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 7 out 6
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 8 out 7
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 9 out 8
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:writeDatagram) packets in 10 out 9
BPASS  : tst_QUdpSocket::echo(WithoutProxy:writeDatagram)
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 1 out 0
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 2 out 1
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 3 out 2
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 4 out 3
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 5 out 4
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 6 out 5
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 7 out 6
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 8 out 7
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 9 out 8
QDEBUG : tst_QUdpSocket::echo(WithoutProxy:write) packets in 10 out 9
BPASS  : tst_QUdpSocket::echo(WithoutProxy:write)
QDEBUG : tst_QUdpSocket::linkLocalIPv6(WithoutProxy) QHostAddress("fe80::aeb7:347a:5876:38a3%ens3")
PASS   : tst_QUdpSocket::linkLocalIPv6(WithoutProxy)
SKIP   : tst_QUdpSocket::linkLocalIPv4(WithoutProxy) No IPv4 link local addresses
   Loc: [../tst_qudpsocket.cpp(1732)]
PASS   : tst_QUdpSocket::readyRead(WithoutProxy)
FAIL!  : tst_QUdpSocket::readyReadForEmptyDatagram(WithoutProxy) Compared values are not the same
   Actual   (receiver.pendingDatagramSize()): -1
   Expected (qint64(0))                     : 0
   Loc: [../tst_qudpsocket.cpp(1872)]
PASS   : tst_QUdpSocket::asyncReadDatagram(WithoutProxy)
PASS   : tst_QUdpSocket::writeInHostLookupState(WithoutProxy)
PASS   : tst_QUdpSocket::cleanupTestCase()
Totals: 80 passed, 3 failed, 3 skipped, 3 blacklisted, 17492ms