Simulation for mulit-homing with OMNet++

I visited Monash university in Melbourne from Augast 8 to September 12.
I tryed to clarify the multi-homing problem. Here is the plan.

Why multi-homing?

Mobile node prefer multi-homing.

Issue I found

Omnet++ issues

Packets duplication, when client has a interfase and has two default gateways.

Tunnel do not work well, when prefix is specified as a trigger distination.

Routers forward packet which came to eth0 to eth0

When client has two global addresses and two interfaces,
there are cases that client select incorrect interfaces.

Multi-homing issues

Echo reply cannot reach client, if the router does not know the way which the echo request went.

Idea

Multi-homing(1, 0, 0) prefer one interface.

Classification

I took to multi-homing(0, 0, 0)