Check for IP existence in netbox before blind deletion

netbox-scanner/nbscanner.py

@@ -155,8 +155,13 @@ class NetBoxScanner(object):
         self.logger('scanned', net=network, hosts=len(hosts))
         for host in hosts:
             self.sync_host(host)
+
+        ips = list()
+        ips.append(self.netbox.ipam.ip_addresses.all())
+
         for ipv4 in IPv4Network(network):  # cleanup
             address = str(ipv4)
+            if any(ip == address for ip in ips):
                 if not any(h[0]==address for h in hosts):
                     try:
                         nbhost = self.netbox.ipam.ip_addresses.get(address=address)