I86bi-linux-l2-ipbasek9-15.1g.bin ((top))
This image does not support Layer 3 dynamic routing. Attempting router ospf 1 will fail. For routing, use a Layer 3 IOL image.
IOU (IOS on Unix). Unlike standard IOS images that run on hardware, these are compiled to run natively on Linux x86 architectures, making them extremely resource-efficient. Release Version: 15.1g, a stable iteration of the 15.1 release train. Feature Set: i86bi-linux-l2-ipbasek9-15.1g.bin
Not only are these illegal, but they often contain malware or corrupted images that crash your emulator. This image does not support Layer 3 dynamic routing