From 0cfe6eebcc31b417aeadd376ff78d726e3a2c8ff Mon Sep 17 00:00:00 2001
From: evilsocket <evilsocket@gmail.com>
Date: Wed, 20 Mar 2019 21:16:34 +0100
Subject: [PATCH] fix: do not start arp.spoof if the list of targets is empty

---
 modules/arp_spoof/arp_spoof.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/modules/arp_spoof/arp_spoof.go b/modules/arp_spoof/arp_spoof.go
index 6dc5a573..507d38af 100644
--- a/modules/arp_spoof/arp_spoof.go
+++ b/modules/arp_spoof/arp_spoof.go
@@ -127,9 +127,14 @@ func (mod *ArpSpoofer) Start() error {
 		return err
 	}
 
+	nTargets := len(mod.addresses) + len(mod.macs)
+	if nTargets == 0 {
+		mod.Warning("list of targets is empty, module not starting.")
+		return nil
+	}
+
 	return mod.SetRunning(true, func() {
 		neighbours := []net.IP{}
-		nTargets := len(mod.addresses) + len(mod.macs)
 
 		if mod.internal {
 			list, _ := iprange.ParseList(mod.Session.Interface.CIDR())