From 76f862fddde4f4fc399ba5ac343718baa35e2ac0 Mon Sep 17 00:00:00 2001
From: laf <neil@lathwood.co.uk>
Date: Tue, 20 Oct 2015 16:12:03 +0000
Subject: [PATCH] Updated to disable auto-discovery by ip

---
 doc/Support/Configuration.md         | 5 +++++
 includes/defaults.inc.php            | 2 ++
 includes/discovery/functions.inc.php | 6 ++++++
 3 files changed, 13 insertions(+)

diff --git a/doc/Support/Configuration.md b/doc/Support/Configuration.md
index 7ffdffe08c..7bb277ff9a 100644
--- a/doc/Support/Configuration.md
+++ b/doc/Support/Configuration.md
@@ -261,6 +261,11 @@ $config['autodiscovery']['nets-exclude'][] = "240.0.0.0/4";
 ```
 Arrays of subnets to exclude in auto discovery mode.
 
+```php
+$config['discovery_by_ip'] = true;
+```
+Enable auto discovery by IP. By default we only discover based on hostnames but manually adding by IP is allowed.
+
 #### Email configuration
 
 > You can configure these options within the WebUI now, please avoid setting these options within config.php
diff --git a/includes/defaults.inc.php b/includes/defaults.inc.php
index f3af33e222..78d6982e12 100644
--- a/includes/defaults.inc.php
+++ b/includes/defaults.inc.php
@@ -215,6 +215,8 @@ $config['autodiscovery']['nets-exclude'][] = '127.0.0.0/8';
 $config['autodiscovery']['nets-exclude'][] = '169.254.0.0/16';
 $config['autodiscovery']['nets-exclude'][] = '224.0.0.0/4';
 $config['autodiscovery']['nets-exclude'][] = '240.0.0.0/4';
+// Autodiscover by IP
+$config['discovery_by_ip'] = false;// Set to true if you want to enable auto discovery by IP.
 
 $config['alerts']['email']['enable'] = false;
 // Enable email alerts
diff --git a/includes/discovery/functions.inc.php b/includes/discovery/functions.inc.php
index dbe5d08dd0..3fefbd7459 100644
--- a/includes/discovery/functions.inc.php
+++ b/includes/discovery/functions.inc.php
@@ -34,6 +34,12 @@ function discover_new_device($hostname, $device='', $method='', $interface='') {
             return false;
         }
     }
+    else {
+        if ($config['discovery_by_ip'] === false) {
+            d_echo('Discovery by IP disabled, skipping ' . $dst_host);
+            return false;
+        }
+    }
 
     d_echo("ip lookup result: $ip\n");