openwrt-xburst/package/busybox/patches/240-udhcpc_retries.patch

--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -1257,7 +1257,7 @@ int udhcpc_main(int argc UNUSED_PARAM, c
 
 			switch (state) {
 			case INIT_SELECTING:
-				if (packet_num < discover_retries) {
+				if (!discover_retries || packet_num < discover_retries) {
 					if (packet_num == 0)
 						xid = random_xid();
 					/* broadcast */
@@ -1286,7 +1286,7 @@ int udhcpc_main(int argc UNUSED_PARAM, c
 				packet_num = 0;
 				continue;
 			case REQUESTING:
-				if (packet_num < discover_retries) {
+				if (!discover_retries || packet_num < discover_retries) {
 					/* send broadcast select packet */
 					send_select(xid, server_addr, requested_ip);
 					timeout = discover_timeout;