Same IP to shared interfaces in ASA

[ffadaie]

Here is the situation:
I have two contexts on a ASA 5510 (with Security PLus license). One of the contexts (context A) is using a single physical interface that is virtualized into 8 VLANed interfaces (Ethernet 0/0.1-8). Context B has a dedicated physical interface to the Internet and is sharing Ethernet 0/0.1 with context A.
I want to have the same IP for the shared interface in both contexts lets say 192.168.2.1 but when I assign this in both contexts, it gives me an error saying there is IP conflict on the net.
I technically should be able to do it (based on

http://www.cisco.com/en/US/products..._configuration_example09186a00808d2b63.shtml)

if I use different MACs in the contexts but I can't! What I am doing wrong?

 

[North323]

i dont think you can ever have the same IP address

 

[stubnski]

What do you mean by - "if I use different MACs in the contexts but I can't"? Do you mean you cannot configure unique mac addresses for each contexts?

Also post a scrubbed config


Stubnski

 

[ffadaie]

North323: I should technically be able to do it based on

http://www.cisco.com/en/US/products...nfiguration_example09186a00808d2b63.shtml#mul

=> "You can assign the same IP address to shared interfaces in a different context. Although this is possible, a separate MAC address must be assigned for this interface in each context in order to classify the traffic into the context as shown."
Stubnski: I can configure unique mac addresses for each context, that's no problem. However, even when I do that, I cannot assign the same IP in different contexts. It gives me an error saying: net ip conflict on one of the interfaces.
I will upload the configs shortly. (There are multiple configs for different contexts and they are huge. I should strip them down first).