$OpenBSD: patch-jdk_src_share_native_java_lang_System_c,v 1.2 2019/01/11 17:21:38 sthen Exp $
Index: jdk/src/share/native/java/lang/System.c
--- jdk/src/share/native/java/lang/System.c.orig
+++ jdk/src/share/native/java/lang/System.c
@@ -320,6 +320,10 @@ Java_java_lang_System_initProperties(JNIEnv *env, jcla
     }
 #endif
 
+#ifdef __OpenBSD__
+    PUTPROP(props, "java.net.preferIPv4Stack", sprops->java_net_preferIPv4Stack);
+#endif
+
     /* !!! DO NOT call PUTPROP_ForPlatformNString before this line !!!
      * !!! I18n properties have not been set up yet !!!
      */
