check the wire version in the isMaster response in ShardingCatalogManagerImpl::_validateHostAsShard
- is related to
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SERVER-24792 Ensure that mongos from 3.4 will refuse to talk to mongod from 3.2
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- Closed
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SERVER-25623 addShard should fail if shard's binary version < the cluster's featureCompatibilityVersion
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- Closed
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