RFR: 8308807: [AIX] MulticastSocket and jdp test fails due to joinGroup

[Matthias Baesken]

On Thu, 25 May 2023 07:14:19 GMT, Deepa Kumari <duke at openjdk.org> wrote:

> DatagramSocket delegates to an inner DatagramSocket object. Irrespective of whether datagramSocket is IPv4 or IPv6, we create an IPv6 datagramChannel as its's delegate. So, This can cause problems with operations like joinGroup. 
> 
> On AIX, IPv6 datagramSocket can not join an IPv4 multicast group.
> 
> These failures can be fixed by making sure that the delegate created for a datagram socket has the same protocol family. 
> 
> 
> 
> 
> Reported Issue : [JDK-8308807](https://bugs.openjdk.org/browse/JDK-8308807)

With this PR added to our build/test queue we noticed a number of additional test failures **cross platform** .
Examples
java/net/MulticastSocket/JoinLeave.java
java/net/MulticastSocket/MulticastAddresses.java

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PR Comment: https://git.openjdk.org/jdk/pull/14142#issuecomment-1723017139