diff --git a/include/netdb.h b/include/netdb.h
index 9ed6e61471e5..102567f6c995 100644
--- a/include/netdb.h
+++ b/include/netdb.h
@@ -179,7 +179,7 @@ struct addrinfo {
 /* valid flags for addrinfo (not a standard def, apps should not use it) */
 #define AI_MASK \
     (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
-    AI_ADDRCONFIG)
+    AI_ADDRCONFIG | AI_ALL | AI_V4MAPPED)
 
 #define	AI_ALL		0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
 #define	AI_V4MAPPED_CFG	0x00000200 /* accept IPv4-mapped if kernel supports */