# Driver doesn't validate maxStalenessSeconds while TopologyType is Unknown.
---
heartbeatFrequencyMS: 10000
topology_description:
  type: Unknown
  servers:
  - &1
    address: a:27017
    type: Unknown
    maxWireVersion: 6
read_preference:
  mode: Nearest
  maxStalenessSeconds: 1
suitable_servers: []
in_latency_window: []
