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deprecate disallowed-offsets config for re-orgs (#9449)

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https://github.com/ethereum/consensus-specs/pull/5348. As per discussions in issue we no longer need to support `disallowed-offsets` for pre-Fulu forks.


  


Co-Authored-By: hopinheimer <knmanas6@gmail.com>
This commit is contained in:
hopinheimer
2026-06-13 23:02:48 -04:00
committed by GitHub
parent 1d921b2b4e
commit 227a7c976f
15 changed files with 77 additions and 216 deletions
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10
book/src/advanced_re-orgs.md
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@@ -11,15 +11,11 @@ attestations and transactions that can be included.
## Command line flags
There are three flags which control the re-orging behaviour:
There is one flag which controls the re-orging behaviour:
* `--disable-proposer-reorgs`: turn re-orging off (it's on by default).
* `--proposer-reorg-disallowed-offsets N1,N2,N3...`: Prohibit Lighthouse from attempting to reorg at
specific offsets in each epoch. A disallowed offset `N` prevents reorging blocks from being
proposed at any `slot` such that `slot % SLOTS_PER_EPOCH == N`. The value to this flag is a
comma-separated list of integer offsets.
All flags should be applied to `lighthouse bn`. The default configuration is recommended as it
This flag should be applied to `lighthouse bn`. The default configuration is recommended as it
balances the chance of the re-org succeeding against the chance of failure due to attestations
arriving late and making the re-org block non-viable.
@@ -32,8 +28,6 @@ The full conditions are described in [the spec][] but the most important ones ar
* Only single-slot re-orgs: Lighthouse will build a block at N + 1 to re-org N by building on the
parent N - 1. The result is a chain with exactly one skipped slot.
* No epoch boundaries: to ensure that the selected proposer does not change, Lighthouse will
not propose a re-orging block in the 0th slot of an epoch.
## Logs

7
book/src/help_bn.md
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@@ -308,12 +308,7 @@ Options:
--proposer-reorg-cutoff <MILLISECONDS>
DEPRECATED. This flag has no effect.
--proposer-reorg-disallowed-offsets <N1,N2,...>
Comma-separated list of integer offsets which can be used to avoid
proposing reorging blocks at certain slots. An offset of N means that
reorging proposals will not be attempted at any slot such that `slot %
SLOTS_PER_EPOCH == N`. By default only re-orgs at offset 0 will be
avoided. Any offsets supplied with this flag will impose additional
restrictions.
DEPRECATED. This flag has no effect.
--proposer-reorg-epochs-since-finalization <EPOCHS>
DEPRECATED. This flag has no effect.
--proposer-reorg-parent-threshold <PERCENT>