ip dhcp excluded-address 10.0.0.1

ip dhcp pool 1
network 10.0.0.0 255.255.255.0
import all
default-router 10.0.0.1
exit

int Vlan1
ip address 10.0.0.1 255.255.255.0
ip nat inside
exit

int GigabitEthernet8
ip address dhcp

int GigabitEthernet8
ip access-group 123 in
ip nat outside

ip nat inside source list 101 interface GigabitEthernet8 overload

access-list 101 permit ip 10.0.0.0 0.0.0.255 any
access-list 101 permit igmp 10.0.0.0 0.0.0.255 any

access-list 123 permit ip any any
access-list 123 permit igmp any any