diff --git a/include/nsysnet/misc.h b/include/nsysnet/misc.h
index df2d8694f..26713e542 100644
--- a/include/nsysnet/misc.h
+++ b/include/nsysnet/misc.h
@@ -10,9 +10,23 @@
 extern "C" {
 #endif
 
+typedef enum
+{
+   //! Prevents closing nsysnet sockets during socketclose_all
+   //! Note: No-op if security level is prod
+   SOLIB_OPT_AVOID_CLOSE_ALL = 0x3000,
+} SOLIBOpt;
+WUT_CHECK_SIZE(SOLIBOpt, 4);
+
 int
 set_multicast_state(BOOL multicastEnable);
 
+int
+socketclose_all(void);
+
+int
+setsocklibopt(SOLIBOpt opt, uint32_t value);
+
 #ifdef __cplusplus
 }
 #endif