Packet tracer ICMP problem across Cloud-PT - simulating an ISP

OK so I'm trying to simulate the access part of an ISP. Its proving rather difficult though.  I can get all the clients to ping back to the interface on the ISP_EXG_R1 OK. I can dish out IP's to the customers WAN interface of their routers.

I can't for the love of me get the 'customers' public IP's to ping each other. Tracing a packet sees it being dropped on the routers interface where it should send the packet back out.

I have tried a 'ip route' but that did not work. I'm wondering if there is a limitation here. I can mapping multiple modems to one Ethernet cable...

Cisco Packet Tracer 6.0.1

I'm a little behind with this. With Cisco's whole move to the new NetSpace portal it looks like there was a new version of Packet Tracer. 6.0.1 offers new features but has the same look and feel to it.

Straight from the FAQ:

Packet Tracer 6.0.1 is a major release that includes the following functionality:

● Supports IOS 15.2 and its licensing methodology
● Enhanced IPv6 support
● Supports new devices such as ISR 1941, ISR 2901, ISR 2911, terminal server interface, and servers with 2 network interface cards
● Supports Hot Standby Router Protocol (HSRP) and ACL sequence numbers
● Provides new capability with PT LAN and WAN Multiuser Servers to create multiuser games and activities
● Provides new capability with PT Bridge to connect real network equipment to Packet Tracer environment

Its disappointing to see they have missed OS X once more, it can't be a world away from the Ubuntu install. I haven't tried it on Ubuntu yet but I wonder if you still need to install the dependencies that come with programs like Wine in order for it to work still or if they have started including them like they should!

Comments or thoughts? Leave them below!