diff --git a/unix/linux/types.go b/unix/linux/types.go
index 321cb8f6..7efe890c 100644
--- a/unix/linux/types.go
+++ b/unix/linux/types.go
@@ -3655,3 +3655,11 @@ const (
 	CLOSE_RANGE_UNSHARE = C.CLOSE_RANGE_UNSHARE
 	CLOSE_RANGE_CLOEXEC = C.CLOSE_RANGE_CLOEXEC
 )
+
+// Netlink extended acknowledgement TLVs.
+
+const (
+	NLMSGERR_ATTR_MSG    = C.NLMSGERR_ATTR_MSG
+	NLMSGERR_ATTR_OFFS   = C.NLMSGERR_ATTR_OFFS
+	NLMSGERR_ATTR_COOKIE = C.NLMSGERR_ATTR_COOKIE
+)
diff --git a/unix/ztypes_linux.go b/unix/ztypes_linux.go
index 33ca5034..c769e73c 100644
--- a/unix/ztypes_linux.go
+++ b/unix/ztypes_linux.go
@@ -3714,3 +3714,9 @@ const (
 	CLOSE_RANGE_UNSHARE = 0x2
 	CLOSE_RANGE_CLOEXEC = 0x4
 )
+
+const (
+	NLMSGERR_ATTR_MSG    = 0x1
+	NLMSGERR_ATTR_OFFS   = 0x2
+	NLMSGERR_ATTR_COOKIE = 0x3
+)