From 966f054a639f07fb76db8ae00e55bac60ee9f727 Mon Sep 17 00:00:00 2001
From: asxalex <asxalex@163.com>
Date: Wed, 30 Oct 2024 10:30:58 +0800
Subject: [PATCH] BROADCAST ip to BROADCAST_MAC

---
 src/network/arp.rs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/network/arp.rs b/src/network/arp.rs
index cfd5785..8569b24 100644
--- a/src/network/arp.rs
+++ b/src/network/arp.rs
@@ -171,6 +171,15 @@ impl ArpInfo {
         if ip == BROADCAST_IPADDR {
             return (BROADCAST_MAC, ip, false);
         }
+        let edge = get_edge();
+        let netbit = edge.device_config.get_net_bit();
+        let host_netmask = net_bit_len_to_mask(netbit);
+        let host_netmask_reverse = !host_netmask;
+
+        if (ip & host_netmask_reverse) == host_netmask_reverse {
+            return (BROADCAST_MAC, ip, false);
+        }
+
         let first_ip = (ip >> 24) as u8 & 0xff;
         if first_ip >= 224 && first_ip <= 239 {
             let mut multi = MULTICAST_MAC;
@@ -180,10 +189,8 @@ impl ArpInfo {
             return (multi, ip, false);
         }
         let mut target_ip = 0;
-        let edge = get_edge();
 
         let host_ip = edge.device_config.get_ip();
-        let host_netmask = net_bit_len_to_mask(edge.device_config.get_net_bit());
 
         if (ip & host_netmask) == (host_ip & host_netmask) {
             target_ip = ip;