Bonus pool ForR4 is to make sure R4 gets its address


R3#sh run | b ip dhcp
ip dhcp excluded-address 180.40.7.129
ip dhcp excluded-address 180.40.7.131 180.40.7.134
!
ip dhcp pool Prob13
   network 180.40.7.128 255.255.255.224
   default-router 180.40.7.132 180.40.7.133 180.40.7.134
   dns-server 208.28.1.82
   domain-name ccie.com
   option 150 ip 20.20.20.20
!
ip dhcp pool ForR4
   host 180.40.7.130 255.255.255.224
   client-identifier 0063.6973.636f.2d30.3030.352e.3332.3436.2e30.6538.302d.4661.302f.30
!