From 6d02f1376efa448359547f339c9416e15541acfa Mon Sep 17 00:00:00 2001
From: Marco Schlumpp <marco@unikraft.io>
Date: Fri, 2 Feb 2024 11:07:11 +0100
Subject: [PATCH] Enable ARP queueing

This enables sending multiple packets before receiving the ARP response.
glibc's DNS resolver sends multiple packets at once and the default behavior
of LWIP caused dropping of the IPv4 DNS request. Therefore, glibc never
received the DNS response and had to retransmit after a timeout.

Signed-off-by: Marco Schlumpp <marco@unikraft.io>
Reviewed-by: Stefan Jumarea <stefanjumarea02@gmail.com>
Reviewed-by: Mihnea Firoiu <mihneafiroiu0@gmail.com>
Approved-by: Razvan Deaconescu <razvand@unikraft.io>
GitHub-Closes: #46
---
 include/lwipopts.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/lwipopts.h b/include/lwipopts.h
index 54d802b..61d557e 100644
--- a/include/lwipopts.h
+++ b/include/lwipopts.h
@@ -107,6 +107,7 @@ void sys_free(void *ptr);
 /**
  * ARP options
  */
+#define ARP_QUEUEING 1
 #define MEMP_NUM_ARP_QUEUE 256
 #define ETHARP_SUPPORT_STATIC_ENTRIES 1
 
-- 
2.39.5