RFR: 8275640 (win) java.net.NetworkInterface issues with IPv6-only environments [v3]

[Daniel Jelinski]

On Sat, 8 Jan 2022 18:17:29 GMT, Mark Sheppard <msheppar at openjdk.org> wrote:

>> Daniel Jelinski has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Address problems reported by clang-tidy
>
> src/java.base/windows/native/libnet/NetworkInterface_winXP.c line 256:
> 
>> 254: 
>> 255:     ret = enumInterfaces(env, netifPP);
>> 256:     if (ret == -1) {
> 
> this change is questionable: enumInterfaces returns -2  to allows processing to continue with IPv6 data ... this change will prohibit that policy

In my experiments the `enumInterfaces` succeeded in IPv6-only environment. The function only fails with -2 when a new interface is added during enumeration.
I could modify the function to stop returning -2 if you think it makes sense.

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