--- ppp-2.4.3.orig/pppd/sys-linux.c	2014-02-05 17:42:08.801067926 +0800
+++ ppp-2.4.3/pppd/sys-linux.c	2014-02-05 17:40:43.993069634 +0800
@@ -655,8 +655,8 @@
 			num[0] = atoi(&req_name[5]);
 			num[1] = 3;
 		}
-#if 1 /* support pppoWWAN, ZyXEL */
-		else if ((p = strstr(req_name, "pppoWWAN")) != NULL){
+#if 1 /* support pppowwan, ZyXEL */
+		else if ((p = strstr(req_name, "pppowwan")) != NULL){
 			num[0] = atoi(&req_name[8]);
 			num[1] = 4;
 		}