--- busybox-1.9.1/networking/udhcp/files.c	Tue Feb 12 17:03:00 2008
+++ busybox-1.9.1-udhcp/networking/udhcp/files.c	Thu Mar 20 13:21:37 2008
@@ -167,7 +167,7 @@
 	if (!opt)
 		return 0;
 
-	idx = index_in_strings(opt, dhcp_option_strings); /* NB: was strcasecmp! */
+	idx = index_in_strings(dhcp_option_strings, opt); /* NB: was strcasecmp! */
 	if (idx < 0)
 		return 0;
 	option = &dhcp_options[idx];