RFR: 8354530: AIX: sporadic unexpected errno when calling setsockopt in Net.joinOrDrop [v2]

[Arno Zeller]

> On AIX we have sporadic EAGAIN errors when calling setsockopt. This is undocumented, but has been seen in tests. 
> Further test did show that it might not be enough to only try it once again. In our daily test environment we have seen no more unexpected exceptions when we retried 3 times.

Arno Zeller has updated the pull request incrementally with one additional commit since the last revision:

  Improve comment.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24996/files
  - new: https://git.openjdk.org/jdk/pull/24996/files/a5caac41..b33fd1f1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24996&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24996&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24996.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24996/head:pull/24996

PR: https://git.openjdk.org/jdk/pull/24996