- Updated the API documentation for Service.Spec.IPFamily to warn that its exact
  semantics will probably change before the dual-stack feature goes GA, and users
  should look at ClusterIP or Endpoints, not IPFamily, to figure out if an existing

- Add dual-stack Services (alpha).  This is a BREAKING CHANGE to an alpha API.
  It changes the dual-stack API wrt Service from a single ipFamily field to 3
  fields: ipFamilyPolicy (SingleStack, PreferDualStack, RequireDualStack),
  ipFamilies (a list of families assigned), and clusterIPs (inclusive of

        OS_FAMILY = getOsFamily();
        IS_WINDOWS = isFamily(FAMILY_WINDOWS);
    }

    private Os() {}

    /**
     * Determines if the OS on which Maven is executing matches the
     * given OS family.
     *
     * @param family the family to check for
     * @return true if the OS matches
     *
     */
    public static boolean isFamily(String family) {
        return isFamily(family, OS_NAME);

    * 1. `--service-cluster-ip-range[0]` is consider primary service range, and will be used for any service with `Service.Spec.IPFamily = nil` or any service in the at the time of turning on the feature flag.

        assertTrue(instance.equals(new FileModelSource(tempFile)));
    }

    @Test
    void testWindowsPaths() throws Exception {
        assumeTrue(Os.isFamily("Windows"));

        File upperCaseFile = createTempFile("TESTE");
        String absolutePath = upperCaseFile.getAbsolutePath();
        File lowerCaseFile = new File(absolutePath.toLowerCase());

- Fixed the EndpointSliceController to correctly create endpoints for IPv6-only pods.
  
  Fixed the EndpointController to allow IPv6 headless services, if the IPv6DualStack
  feature gate is enabled, by specifying `ipFamily: IPv6` on the service. (This already
  worked with the EndpointSliceController.) ([#91399](https://github.com/kubernetes/kubernetes/pull/91399), [@danwinship](https://github.com/danwinship)) [SIG Apps and Network]

        String test = family;
        boolean reverse = false;

        if (test.startsWith("!")) {
            reverse = true;
            test = test.substring(1);
        }

        boolean result = Os.isFamily(test);

        if (reverse) {
            return !result;
        } else {
            return result;
        }
    }

        boolean reverse = false;

        if (test.startsWith("!")) {
            reverse = true;
            test = test.substring(1);
        }

        boolean result = Os.isFamily(test, actualName);

        return reverse ? !result : result;
    }

			items = operands[:cap(operands)][len(operands)][:0]
		} else {
			items = make([]lex.Token, 0, 3)
		}
		for {
			tok = p.nextToken()
			if len(operands) == 0 && len(items) == 0 {
				if p.arch.InFamily(sys.ARM, sys.ARM64, sys.AMD64, sys.I386, sys.Loong64, sys.RISCV64) && tok == '.' {
					// Suffixes: ARM conditionals, Loong64 vector instructions, RISCV rounding mode or x86 modifiers.
					tok = p.nextToken()

        new EnhancedComponentConfigurator().configureComponent(mojo, configuration, evaluator, null);

        assertEquals(
                Objects.equals(path.toUri().toString(), path.toUri().toASCIIString()), !Os.isFamily(Os.FAMILY_WINDOWS));
        assertEquals(mojo.uri, path.toUri());
        assertEquals(mojo.path, path);
        assertEquals(mojo.uriString, path.toUri().toString());