default DisconnectReason getDisconnectReason(final EthPeer ethPeer) {
    return DisconnectReason.SUBPROTOCOL_TRIGGERED;
  }
Reason the peer will disconnect when the validator fail.

@param ethPeer The peer to be disconnected.
@return The reason for disconnecting.
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/peervalidation/PeerValidator.java