When configured with a link state protocol, why can the local device not establish neighbor relationship with the peer device

When the local device is configured with a link state protocol, first check the type of the interface on the peer device.
-To set the network type for an OSPF interface, run the ospf network-type command.
-To set the network type of an IS-IS interface to P2P, run the isis circuit-type p2p command.
The network types of the interfaces on both ends of a link must be the same; otherwise, the neighbor relationship cannot be established.

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