$NetBSD$

--- socket++/sockstream.h.orig	2006-05-12 07:22:35.000000000 +0000
+++ socket++/sockstream.h
@@ -153,7 +153,7 @@ public:
     msg_peek	        = MSG_PEEK,
     msg_dontroute	= MSG_DONTROUTE,
 
-#if !(defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) || defined(__APPLE__))
+#if !(defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) || defined(__APPLE__) || defined(__DragonFly__))
     msg_maxiovlen	= MSG_MAXIOVLEN
 #endif
   };
