+// the network address flags
+#define VC_NXA_TYPE_IPV4 0x0001
+#define VC_NXA_TYPE_IPV6 0x0002
+
+#define VC_NXA_TYPE_NONE 0x0000
+#define VC_NXA_TYPE_ANY 0x00FF
+
+#define VC_NXA_TYPE_ADDR 0x0010
+#define VC_NXA_TYPE_MASK 0x0020
+#define VC_NXA_TYPE_RANGE 0x0040
+
+#define VC_NXA_MOD_BCAST 0x0100
+#define VC_NXA_MOD_LBACK 0x0200
+
+