[jdk11u-dev] RFR: 8241336: Some java.net tests failed with NoRouteToHostException on MacOS with special network configuration [v2]

[Christoph Langer]

> Backport of JDK-8241336
> 
> - This is WIP, not ready for review yet -

Christoph Langer has updated the pull request incrementally with one additional commit since the last revision:

  Add missing @library /test/lib annotation to Promiscuous.java. It was part of JDK-8220673 which is not backported.

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Changes:
  - all: https://git.openjdk.java.net/jdk11u-dev/pull/296/files
  - new: https://git.openjdk.java.net/jdk11u-dev/pull/296/files/31c28dd8..8f9ea912

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=296&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=296&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/296.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/296/head:pull/296

PR: https://git.openjdk.java.net/jdk11u-dev/pull/296