$NetBSD: patch-ad,v 1.2 2005/12/09 10:46:43 joerg Exp $

--- hercifc.c.orig	2001-01-28 18:05:40.000000000 +0000
+++ hercifc.c
@@ -64,7 +64,11 @@ struct sockaddr_in *sin;                
     sin = (struct sockaddr_in*)
             (oper == SIOCSIFADDR ? &ifreq.ifr_addr
             :oper == SIOCSIFDSTADDR ? &ifreq.ifr_dstaddr
+#if defined(__NetBSD__) || defined(__DragonFly__)
+            :oper == SIOCSIFNETMASK ? &ifreq.ifr_broadaddr
+#else
             :oper == SIOCSIFNETMASK ? &ifreq.ifr_netmask
+#endif
             :NULL);
 
     /* Store the IP address into the structure */