ISP - DHCP - Subinterfaces

[aacisco123]

I have an interface connected to an isp which is the DHCP server. I need to create two subinterfaces that receive two different IP addresses from the ISP. In one subinterface I will do NAT and the other will not. 
What would be the best solution to receive IP addresses from the ISP?

interface G0
 no ip address

 interface g0/0.2
 encapsulation dot1q 2 
 ip address  dhcp ¿?

 ip vrf forwarding OUTSIDE 1

 interface g0/0.3
  encapsulation dot1q 3
  ip address dhcp ¿?
  ip nat outside 
  ip vrf forwarding OUTSIDE 3

 ! 

interface vlan 3
ip vrf forwarding OUTSIDE3
 
 ip nat inside
 ip address xxx

THANK IN ADVANCE 

[Georg Pauwen]

Hello,

I think you need the 'ip helper-address' command on the subinterfaces, with the IP address being the one of the DHCP server...

[Julio E. Moisa]

Hi,

Do you know if the provider is using your MAC addresses as identifier? If they are, you could configure the following command under your sub interfaces. Assuming the ISP has a local dhcp pool and the configuration is correct and the dhcp pools are different to avoid overlapping.

int g0/0.2
ip address dhcp
ip address dhcp client-id g0/0.2

int g0/0.3
ip address dhcp
ip address dhcp client-id g0/0.3

Could you please confirm the MAC addresses displayed on the sub-interfaces? I have not used it with subinterfaces before but you can try.