Introduce the notion of experimental features

servers/lloadd/config.c

@@ -1890,6 +1890,19 @@ config_feature( ConfigArgs *c )
                 c->argv[0], c->argv[i] );
         return 1;
     }
+
+    if ( mask & ~LLOAD_FEATURE_SUPPORTED_MASK ) {
+        for ( i = 1; i < c->argc; i++ ) {
+            int j = verb_to_mask( c->argv[i], features );
+            if ( features[j].mask & ~LLOAD_FEATURE_SUPPORTED_MASK ) {
+                Debug( LDAP_DEBUG_ANY, "%s: <%s> "
+                        "experimental feature %s is undocumented, unsupported "
+                        "and can change or disappear at any time!\n",
+                        c->log, c->argv[0], c->argv[i] );
+            }
+        }
+    }
+
     lload_features |= mask;
     return 0;
 }

servers/lloadd/lload.h

@@ -177,6 +177,10 @@ typedef enum {
     LLOAD_FEATURE_PAUSE = 1 << 2,
 } lload_features_t;
 
+#define LLOAD_FEATURE_SUPPORTED_MASK ( \
+    LLOAD_FEATURE_PROXYAUTHZ | \
+    0 )
+
 #ifdef BALANCER_MODULE
 #define LLOAD_TLS_CTX ( lload_use_slap_tls_ctx ? slap_tls_ctx : lload_tls_ctx )
 #else