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From 51311e645e3deb9917cafcaac3a430c614769ad4 Mon Sep 17 00:00:00 2001
From: Roy Hills <royhills@hotmail.com>
Date: Sat, 4 Feb 2023 12:21:40 +0000
Subject: [PATCH] Disable promiscuous mode (#142)
* Disable promiscuous mode
* Update ChangeLog and NEWS.md
---
ChangeLog | 6 ++++++
NEWS.md | 1 +
arp-scan.h | 2 +-
3 files changed, 8 insertions(+), 1 deletion(-)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2023-02-04 Roy Hills <royhills@hotmail.com>
+
+ * arp-scan.h: Disable promiscuous mode on the network interface.
+ Promiscuous mode is not required to receive ARP response packets
+ because they are unicast packets directed to the scanning host.
+
2022-12-10 Roy Hills <royhills@hotmail.com>
* configure.ac: Set version to 1.10.0.
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,6 +1,12 @@
**This file gives a brief overview of the major changes between each arp-scan
release. For more details please read the ChangeLog file.**
+# 2023-02-26 arp-scan 1.10.1-git (in development)
+
+* Fixed Bugs:
+
+ - Do not enable promiscuous mode on the network interface as it is not needed.
+
# 2022-12-10 arp-scan 1.10.0 (git tag 1.10.0)
## New Features
--- a/arp-scan.h
+++ b/arp-scan.h
@@ -144,7 +144,7 @@
#define DEFAULT_RETRY 2 /* Default number of retries */
#define DEFAULT_TIMEOUT 500 /* Default per-host timeout in ms */
#define SNAPLEN 64 /* 14 (ether) + 28 (ARP) + extra */
-#define PROMISC 1 /* Enable promiscuous mode */
+#define PROMISC 0 /* Promiscuous mode 0=off, 1=on */
#define TO_MS 1000 /* Timeout for pcap_set_timeout() */
#define OPTIMISE 1 /* Optimise pcap filter */
#define ARPHRD_ETHER 1 /* Ethernet ARP type */
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