RFR: 8275640 (win) java.net.NetworkInterface issues with IPv6-only environments [v2]

[Daniel Jeliński]

On Thu, 28 Oct 2021 14:27:15 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> I still need to review it though

Each commit tries to fix one function (memory allocation / deallocation / return values); it may be easier to review them one by one.

> I assume we're talking about using `GetIfTable2` and `GetIfEntry2`

Yes, that's what I was talking about.
And yes, looks like `GetAdaptersAddresses` is still the best method to retrieve adapter-to-address mapping. For a moment I thought [GetUnicastIpAddressEntry](https://docs.microsoft.com/en-us/windows/win32/api/Netioapi/nf-netioapi-getunicastipaddressentry) might be able to find adapter by IP address, but apparently that is not the case.

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PR: https://git.openjdk.java.net/jdk/pull/6090