VRF-Lite guest VLAN for Wireless

ip vrf GUEST_WIFI

 description Guest vlan

interface Vlan66

 description Guest WiFi

 ip vrf forwarding GUEST_WIFI

 ip address 10.10.10.250 255.255.255.0

 ip nat inside

 ip virtual-reassembly

ip access-list extended nonat0_GUEST_WIFI

 deny   ip 10.10.10.0 0.0.0.255 10.10.10.0 0.0.0.255

 permit ip 10.10.10.0 0.0.0.255 any

ip nat inside source list nonat0_GUEST_WIFI interface FastEthernet1 vrf GUEST_WIFI overload

ip route vrf GUEST_WIFI 0.0.0.0 0.0.0.0 FastEthernet1 192.168.0.1 global

ip dhcp pool GUEST_WIFI

   vrf GUEST_WIFI

   network 10.10.10.0 255.255.255.0

   default-router 10.10.10.250 

   dns-server 8.8.8.8  

   domain-name guest

   lease 2