diff --git a/FINAL/R4.txt b/FINAL/R4.txt
index b9a5967..1b6deff 100644
--- a/FINAL/R4.txt
+++ b/FINAL/R4.txt
@@ -25,12 +25,14 @@ ip nat outside
 exit
 ip dhcp pool VLAN_C_POOL
 network 192.168.3.0 255.255.255.0
-default-router 192.168.3.1 
+default-router 192.168.3.254
 ip dhcp pool VLAN_D_POOL
 network 192.168.4.0 255.255.255.0
-default-router 192.168.4.1 
+default-router 192.168.4.254
 ip dhcp excluded-address 192.168.3.1 192.168.3.4
 ip dhcp excluded-address 192.168.4.1 192.168.4.4
+ip dhcp excluded-address 192.168.4.254
+ip dhcp excluded-address 192.168.3.254
 interface g0/1
 ip address 10.0.20.3 255.255.255.248
 no shutdown
@@ -49,6 +51,7 @@ exit
 router ospf 1
 network 10.0.20.0 0.0.0.7 area 0 
 network 172.16.12.0 0.0.0.3 area 1
+network 203.0.113.24 0.0.0.3 area 0
 passive-interface g0/0
 end
 copy running-config startup-config
\ No newline at end of file