Index: qemu/net.h
@@ -99,12 +99,14 @@
 int slirp_is_inited(void);
 void net_client_check(void);
 
-#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
-#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
+#define DEFAULT_NETWORK_SCRIPT PREFIX "/etc/qemu-ifup"
+#define DEFAULT_NETWORK_DOWN_SCRIPT PREFIX "/etc/qemu-ifdown"
+#ifndef SMBD_COMMAND 
 #ifdef __sun__
 #define SMBD_COMMAND "/usr/sfw/sbin/smbd"
 #else
 #define SMBD_COMMAND "/usr/sbin/smbd"
 #endif
+#endif
 
 #endif
Index: qemu/net/tap.h
@@ -29,8 +29,8 @@
 #include "qemu-common.h"
 #include "qemu-option.h"
 
-#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
-#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
+#define DEFAULT_NETWORK_SCRIPT PREFIX "/etc/qemu-ifup"
+#define DEFAULT_NETWORK_DOWN_SCRIPT PREFIX "/etc/qemu-ifdown"
 
 int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan);