Cisco Iou L3 - Gns3

Configure three IOU L3 routers with OSPF:

Cisco has moved to (the successor to IOU) in CML and for official licensing. However, many legacy IOU L3 images (15.4, 15.5, 15.6) are still actively used in GNS3 communities. Why? Cisco IOU L3 - GNS3