[jdk18u] RFR: 8272996: JNDI DNS provider fails to resolve SRV entries when IPV6 stack is enabled

[Mat Carter]

Backport of 4c169495a2c4bfdcbc82e94e9ca1ee0cc050daf9

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Commit messages:
 - Backport 4c169495a2c4bfdcbc82e94e9ca1ee0cc050daf9

Changes: https://git.openjdk.java.net/jdk18u/pull/25/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=25&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272996
  Stats: 19 lines in 1 file changed: 11 ins; 6 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk18u/pull/25.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18u pull/25/head:pull/25

PR: https://git.openjdk.java.net/jdk18u/pull/25