RFR: 8281511: java/net/ipv6tests/UdpTest.java fails with checkTime failed [v7]

[serhiysachkov]

> switching to nanoTime as suggested in ticket comments

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

  8281511: review comments updates

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/23840/files
  - new: https://git.openjdk.org/jdk/pull/23840/files/bcc43489..da3fcc16

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23840&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23840&range=05-06

  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/23840.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23840/head:pull/23840

PR: https://git.openjdk.org/jdk/pull/23840