RFR: 8281511: java/net/ipv6tests/UdpTest.java fails with checkTime failed [v8]

[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: updating TcpTest to use new checkIfTimeOut method instead of checkTime one

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Changes:
  - all: https://git.openjdk.org/jdk/pull/23840/files
  - new: https://git.openjdk.org/jdk/pull/23840/files/da3fcc16..55481dd7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23840&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23840&range=06-07

  Stats: 6 lines in 1 file changed: 2 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