JDK18 Alpine Linux jdk_net_0 failures

Test failures from jdk_net_0 during JDK-18+36 Temurin Release Triage on Alpine linux:

```
com/sun/net/httpserver/simpleserver/CommandLinePositiveTest.java.CommandLinePositiveTest
com/sun/net/httpserver/simpleserver/jwebserver/CommandLinePositiveTest.java.CommandLinePositiveTest
java/net/InetAddress/HostsFileOrderingTest.java.HostsFileOrderingTest
java/net/InetAddress/InternalNameServiceTest.java.InternalNameServiceTest
java/net/InetAddress/InternalNameServiceWithHostsFileTest.java.InternalNameServiceWithHostsFileTest
```

It is possible that these tests fail only in a container environment. The same tests failed on X Linux when run in a docker container https://ci.adoptopenjdk.net/job/Test_openjdk18_hs_extended.openjdk_x86-64_linux_testList_1/20/testReport/, but passed when run in a non docker container environment https://ci.adoptopenjdk.net/job/Grinder/3886/console

Start by reproducing the five listed jdk_net_0 tests in the JDK-18 Alpine Linux container and compare the linked container and non-container runs. Determine whether the failures are container-specific; the issue does not define the expected code or test change once the cause is found.

Written by the indexing model from the issue text.