The logs in the exhibit indicate an OSPF adjacency issue between the N9K-DC-1 and N9K-DC-2. Specifically, the transition from INIT to DOWN suggests an MTU mismatch on the direct link between the two devices. OSPF packets include the MTU in their headers. If there is an MTU mismatch, the adjacency process can fail, even if the devices are physically connected and have correct IP configurations. The ip ospf mtu-ignorecommand allows OSPF to ignore MTU mismatches when forming adjacencies, resolving the issue without requiring changes to the MTU configuration on the interfaces.