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bitcoin/doc/release-notes-19219.md

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Changes regarding misbehaving peers

Peers that misbehave (e.g. send us invalid blocks) are now referred to as discouraged nodes in log output, as they're not (and weren't) strictly banned: incoming connections are still allowed from them, but they're preferred for eviction.

Furthermore, a few additional changes are introduced to how discouraged addresses are treated:

  • Discouraging an address does not time out automatically after 24 hours (or the -bantime setting). Depending on traffic from other peers, discouragement may time out at an indeterminate time.

  • Discouragement is not persisted over restarts.

  • There is no method to list discouraged addresses. They are not returned by the listbanned RPC. That RPC also no longer reports the ban_reason field, as "manually added" is the only remaining option.

  • Discouragement cannot be removed with the setban remove RPC command. If you need to remove a discouragement, you can remove all discouragements by stop-starting your node.