diff --git a/dhcp/midasd.py b/dhcp/midasd.py
index c0d1c1e..ba92ba0 100644
--- a/dhcp/midasd.py
+++ b/dhcp/midasd.py
@@ -118,7 +118,7 @@ class Packet():
         )
 
     @staticmethod
-    def construct_reply_packet(reference_packet, _type, source_ip, topology):
+    def construct_reply_packet(reference_packet, _type, source_ip, topology, settings):
         '''
             Summary:
             Constructs a DHCP packet of type Offer or Ack, modelled from a received packet with some options changed/added.
@@ -142,34 +142,29 @@ class Packet():
 
         reply_packet_object.OP = bytes([0x02])
         reply_packet_object.YIADDR = bytes([yiaddr[0], yiaddr[1], yiaddr[2], yiaddr[3]]) # Client IP
-        reply_packet_object.SIADDR = bytes([192, 168, 1, 7]) # Server IP: 192.168.1.7
-
-        if _type == 'offer': 
-            packet_type = bytes([53, 1, 2]) # DHCP offer packet
-        elif _type == 'ack': 
-            packet_type = bytes([53, 1, 5]) # DHCP ack packet
+        reply_packet_object.SIADDR = bytes([int(octet) for octet in settings['DHCP']['SERVER_IP'].split('.')]) # Server IP (192.168.0.247)
 
         if client_device_os == 'junos':
             reply_packet_object.OPTIONS = b"".join(
                 [
-                    packet_type,
-                    bytes([54, 4, 192, 168, 1, 7]), # Server identifier: 192.168.1.7
+                    bytes([53, 1, 2 if _type == 'offer' else 5]), # DHCP offer or ack packet
+                    bytes([54, 4] + [int(octet) for octet in settings['DHCP']['SERVER_IP'].split('.')]), # Server identifier (192.168.0.247)
                     bytes([51, 4, 0x00, 0x01, 0x51, 0x80]), # Lease time: 86400
                     bytes([1, 4, 255, 255, 255, 254]), # Subnet mask: 255.255.255.254
                     bytes([3, 4, giaddr[0], giaddr[1], giaddr[2], giaddr[3]]), # Default gateway
-                    bytes([150, 4, 192, 168, 1, 7]), # TFTP server: 192.168.1.7
+                    bytes([150, 4] + [int(octet) for octet in settings['TFTP']['SERVER_IP'].split('.')]), # TFTP server (192.168.0.247)
                     Packet.construct_junos_suboptions(f'/configs/{client_device_name}.conf'), # Juniper specific suboptions
                 ]
             )
         elif client_device_os == 'cisco_ios':
             reply_packet_object.OPTIONS = b"".join(
                 [
-                    packet_type,
-                    bytes([54, 4, 192, 168, 1, 7]), # Server identifier: 192.168.1.7
+                    bytes([53, 1, 3 if _type == 'offer' else 5]), # DHCP offer or ack packet
+                    bytes([54, 4] + [int(octet) for octet in settings['DHCP']['SERVER_IP'].split('.')]), # Server identifier (192.168.0.247)
                     bytes([51, 4, 0x00, 0x01, 0x51, 0x80]), # Lease time: 86400
                     bytes([1, 4, 255, 255, 255, 254]), # Subnet mask: 255.255.255.254
                     bytes([3, 4, giaddr[0], giaddr[1], giaddr[2], giaddr[3]]), # Default gateway
-                    bytes([150, 4, 192, 168, 1, 7]), # TFTP server: 192.168.1.7
+                    bytes([150, 4] + [int(octet) for octet in settings['TFTP']['SERVER_IP'].split('.')]), # TFTP server (192.168.0.247)
                     Packet.construct_tlv(67, f'/configs/{client_device_name}.conf'), # Cisco specific bootfile
                 ]
             )
@@ -233,7 +228,6 @@ class Packet():
             option_description_dict[option_number] = option_description
             index += 2 + option_length
 
-
         return option_dict, option_description_dict
 
     @staticmethod
@@ -355,7 +349,7 @@ class DHCPServer(object):
 
                 if packet_options[53] == 1:
                     log('Received DHCP discover packet', 'info')
-                    offer_packet = Packet.construct_reply_packet(received_packet, 'offer', source_address, topology)
+                    offer_packet = Packet.construct_reply_packet(received_packet, 'offer', source_address, topology, self.SETTINGS)
                     log('Constructing DHCP offer packet...', 'info')
                     packet_data, packet_options, option_descriptions = Packet.examine_packet(offer_packet)
                     log(f'Offer packet options:', 'info')
@@ -365,7 +359,7 @@ class DHCPServer(object):
 
                 elif packet_options[53] == 3:
                     log('Received DHCP request packet', 'info')
-                    ack_packet = Packet.construct_reply_packet(offer_packet, 'ack', source_address, topology)
+                    ack_packet = Packet.construct_reply_packet(offer_packet, 'ack', source_address, topology, self.SETTINGS)
                     log('Constructing DHCP ack packet...', 'info')
                     packet_data, packet_options, option_descriptions = Packet.examine_packet(ack_packet)
                     log(f'Ack packet options:', 'info')