diff a/src/java.base/macosx/classes/jdk/internal/sys/in6_h.java b/src/java.base/macosx/classes/jdk/internal/sys/in6_h.java
--- /dev/null
+++ b/src/java.base/macosx/classes/jdk/internal/sys/in6_h.java
@@ -0,0 +1,124 @@
+// Generated by jextract
+package jdk.internal.sys;
+
+import java.lang.invoke.VarHandle;
+import jdk.incubator.foreign.*;
+
+public final class in6_h {
+
+    private in6_h() {}
+    public static class Cin6_addr_t extends Cin6_addr {
+        private Cin6_addr_t() {}
+    }
+    public static class Cin6_addr {
+
+        private Cin6_addr() {}
+        public static MemoryLayout $LAYOUT() {
+            return in6_h$constants.Cin6_addr$LAYOUT();
+        }
+        public static MemoryAddress __u6_addr$addr(MemoryAddress addr) {
+            return addr.segment().asSlice(0, 16).baseAddress();
+        }
+        public static long sizeof() { return $LAYOUT().byteSize(); }
+        public static MemorySegment allocate() { return MemorySegment.allocateNative($LAYOUT()); }
+        public static MemoryAddress allocate(NativeAllocationScope scope) { return scope.allocate($LAYOUT()); }
+        public static MemorySegment allocateArray(int len) {
+            return MemorySegment.allocateNative(MemoryLayout.ofSequence(len, $LAYOUT()));}
+        public static MemoryAddress allocateArray(int len, NativeAllocationScope scope) {
+            return scope.allocate(MemoryLayout.ofSequence(len, $LAYOUT()));}
+    }
+
+    public static class Csockaddr_in6 {
+
+        private Csockaddr_in6() {}
+        public static MemoryLayout $LAYOUT() {
+            return in6_h$constants.Csockaddr_in6$LAYOUT();
+        }
+        public static VarHandle sin6_len$VH() {
+            return in6_h$constants.sin6_len$VH();
+        }
+        public static byte sin6_len$get(MemoryAddress addr) {
+            return (byte)in6_h$constants.sin6_len$VH().get(addr);
+        }
+        public static byte sin6_len$get(jdk.incubator.foreign.MemoryAddress addr, long index) {
+            return (byte)in6_h$constants.sin6_len$VH().get(addr.addOffset(index*sizeof()));
+        }
+        public static void sin6_len$set(jdk.incubator.foreign.MemoryAddress addr, byte x) {
+            in6_h$constants.sin6_len$VH().set(addr, x);
+        }
+        public static void sin6_len$set(jdk.incubator.foreign.MemoryAddress addr, long index, byte x) {
+            in6_h$constants.sin6_len$VH().set(addr.addOffset(index*sizeof()), x);
+        }
+        public static VarHandle sin6_family$VH() {
+            return in6_h$constants.sin6_family$VH();
+        }
+        public static byte sin6_family$get(MemoryAddress addr) {
+            return (byte)in6_h$constants.sin6_family$VH().get(addr);
+        }
+        public static byte sin6_family$get(jdk.incubator.foreign.MemoryAddress addr, long index) {
+            return (byte)in6_h$constants.sin6_family$VH().get(addr.addOffset(index*sizeof()));
+        }
+        public static void sin6_family$set(jdk.incubator.foreign.MemoryAddress addr, byte x) {
+            in6_h$constants.sin6_family$VH().set(addr, x);
+        }
+        public static void sin6_family$set(jdk.incubator.foreign.MemoryAddress addr, long index, byte x) {
+            in6_h$constants.sin6_family$VH().set(addr.addOffset(index*sizeof()), x);
+        }
+        public static VarHandle sin6_port$VH() {
+            return in6_h$constants.sin6_port$VH();
+        }
+        public static short sin6_port$get(MemoryAddress addr) {
+            return (short)in6_h$constants.sin6_port$VH().get(addr);
+        }
+        public static short sin6_port$get(jdk.incubator.foreign.MemoryAddress addr, long index) {
+            return (short)in6_h$constants.sin6_port$VH().get(addr.addOffset(index*sizeof()));
+        }
+        public static void sin6_port$set(jdk.incubator.foreign.MemoryAddress addr, short x) {
+            in6_h$constants.sin6_port$VH().set(addr, x);
+        }
+        public static void sin6_port$set(jdk.incubator.foreign.MemoryAddress addr, long index, short x) {
+            in6_h$constants.sin6_port$VH().set(addr.addOffset(index*sizeof()), x);
+        }
+        public static VarHandle sin6_flowinfo$VH() {
+            return in6_h$constants.sin6_flowinfo$VH();
+        }
+        public static int sin6_flowinfo$get(MemoryAddress addr) {
+            return (int)in6_h$constants.sin6_flowinfo$VH().get(addr);
+        }
+        public static int sin6_flowinfo$get(jdk.incubator.foreign.MemoryAddress addr, long index) {
+            return (int)in6_h$constants.sin6_flowinfo$VH().get(addr.addOffset(index*sizeof()));
+        }
+        public static void sin6_flowinfo$set(jdk.incubator.foreign.MemoryAddress addr, int x) {
+            in6_h$constants.sin6_flowinfo$VH().set(addr, x);
+        }
+        public static void sin6_flowinfo$set(jdk.incubator.foreign.MemoryAddress addr, long index, int x) {
+            in6_h$constants.sin6_flowinfo$VH().set(addr.addOffset(index*sizeof()), x);
+        }
+        public static MemoryAddress sin6_addr$addr(MemoryAddress addr) {
+            return addr.segment().asSlice(8, 16).baseAddress();
+        }
+        public static VarHandle sin6_scope_id$VH() {
+            return in6_h$constants.sin6_scope_id$VH();
+        }
+        public static int sin6_scope_id$get(MemoryAddress addr) {
+            return (int)in6_h$constants.sin6_scope_id$VH().get(addr);
+        }
+        public static int sin6_scope_id$get(jdk.incubator.foreign.MemoryAddress addr, long index) {
+            return (int)in6_h$constants.sin6_scope_id$VH().get(addr.addOffset(index*sizeof()));
+        }
+        public static void sin6_scope_id$set(jdk.incubator.foreign.MemoryAddress addr, int x) {
+            in6_h$constants.sin6_scope_id$VH().set(addr, x);
+        }
+        public static void sin6_scope_id$set(jdk.incubator.foreign.MemoryAddress addr, long index, int x) {
+            in6_h$constants.sin6_scope_id$VH().set(addr.addOffset(index*sizeof()), x);
+        }
+        public static long sizeof() { return $LAYOUT().byteSize(); }
+        public static MemorySegment allocate() { return MemorySegment.allocateNative($LAYOUT()); }
+        public static MemoryAddress allocate(NativeAllocationScope scope) { return scope.allocate($LAYOUT()); }
+        public static MemorySegment allocateArray(int len) {
+            return MemorySegment.allocateNative(MemoryLayout.ofSequence(len, $LAYOUT()));}
+        public static MemoryAddress allocateArray(int len, NativeAllocationScope scope) {
+            return scope.allocate(MemoryLayout.ofSequence(len, $LAYOUT()));}
+    }
+
+}