RFR: 8339787: Add some additional diagnostic output to java/net/ipv6tests/UdpTest.java [v3]

[serhiysachkov]

> 8339787: Add some additional diagnostic output to java/net/ipv6tests/UdpTest.java

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

  8339787: updating copyright

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21066/files
  - new: https://git.openjdk.org/jdk/pull/21066/files/a3225518..594879a0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21066&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21066&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21066.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21066/head:pull/21066

PR: https://git.openjdk.org/jdk/pull/21066