Increase penalty for old block gossip spam #6050
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michaelsproul
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AgeManning
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Jul 5, 2024
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✅ The pull request has been merged automaticallyThe pull request has been merged automatically at 94d55be |
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Issue Addressed
Simplified and streamlined version of:
Proposed Changes
We're still seeing a lot of stale pre-finalization blocks being gossiped by Erigon/Caplin. To encourage users to update to a non-buggy version, this PR increases the peer penalty which will result in more frequent bans.
As far as I can tell there are no cases where honest peers should be gossiping blocks prior to finalization. If a peer is syncing, they should not be broadcasting the blocks they're syncing on gossip. In case of a consensus fault and chain split, it's somewhat irrelevant whether the two sides of the split remain connected to each other, as the damage has already been done by finalizing and nodes will need to be manually resynced to the correct chain. E.g. if Lighthouse-Geth finalizes an invalid checkpoint, then it will view the (valid) minority chain as conflicting with its view of finalization. There is no way it will continue importing blocks from the valid chain until its DB is blown away to revert the faulty finalization. Most attached validators (ones that attested to the invalid finalization) will also be lost at this point (leaked out to 0).
Additional Info
Related to:
BEACON_BLOCK_DELAY_GOSSIPmetric only after a bock is verified #6046