After [JDK-8349910](https://bugs.openjdk.org/browse/JDK-8349910) the 2 tests java/net/httpclient/http3/H3SimpleGet.java#useNioSelector and #with-continuations fail on AIX; all the other HTTP3 related tests seem to do fine on AIX.
The tests fail in the runs with `-Djdk.httpclient.quic.defaultMTU=16336` . This setting has to be adjusted to a lower value for AIX to work. ------------- Commit messages: - JDK-8368739 Changes: https://git.openjdk.org/jdk/pull/28041/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28041&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8368739 Stats: 51 lines in 1 file changed: 51 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/28041.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/28041/head:pull/28041 PR: https://git.openjdk.org/jdk/pull/28041
