diff -Nrua dhcpcd-3.0.17.orig/configure.c dhcpcd-3.0.17/configure.c
--- dhcpcd-3.0.17.orig/configure.c	2007-05-21 15:05:01 +0400
+++ dhcpcd-3.0.17/configure.c	2008-09-11 21:26:25 +0400
@@ -137,9 +137,9 @@
 
 	if (f) {
 		fprintf (f, "# Generated by dhcpcd for interface %s\n", ifname);
-		if (dhcp->dnssearch)
+		if (dhcp->dnssearch && *dhcp->dnssearch)
 			fprintf (f, "search %s\n", dhcp->dnssearch);
-		else if (dhcp->dnsdomain) {
+		else if (dhcp->dnsdomain && *dhcp->dnsdomain) {
 			fprintf (f, "search %s\n", dhcp->dnsdomain);
 		}
 
diff -Nrua dhcpcd-3.0.17.orig/dhcp.c dhcpcd-3.0.17/dhcp.c
--- dhcpcd-3.0.17.orig/dhcp.c	2007-05-21 15:05:01 +0400
+++ dhcpcd-3.0.17/dhcp.c	2008-09-11 21:25:59 +0400
@@ -589,6 +589,7 @@
 
 #define GETSTR(_var) \
 				MIN_LENGTH (sizeof (char)); \
+				if (*(char*)p == '\0') continue; \
 				if (_var) free (_var); \
 				_var = xmalloc (length + 1); \
 				memcpy (_var, p, length); \
@@ -632,7 +633,8 @@
 				MIN_LENGTH (1);
 				if (dhcp->dnssearch)
 					free (dhcp->dnssearch);
-				if ((len = decode_search (p, length, NULL)) > 0) {
+				/* FIXME: decode_search() also reserves space for '\0' */
+				if ((len = decode_search (p, length, NULL)) > 1) {
 					dhcp->dnssearch = xmalloc (len);
 					decode_search (p, length, dhcp->dnssearch);
 				}
diff -Nrua dhcpcd-3.0.17.orig/interface.c dhcpcd-3.0.17/interface.c
--- dhcpcd-3.0.17.orig/interface.c	2007-05-21 15:05:01 +0400
+++ dhcpcd-3.0.17/interface.c	2008-09-11 21:28:40 +0400
@@ -142,7 +142,7 @@
 	if (! ifname)
 		return NULL;
 
-	memset (hwaddr, sizeof (hwaddr), 0);
+	memset (hwaddr, 0, sizeof (hwaddr));
 
 #ifndef __linux__
 	if (getifaddrs (&ifap) != 0)