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docs: update release notes with more detail on the RBF coop close section

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saubyk
2025-04-29 21:07:51 -07:00
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docs/release-notes/release-notes-0.19.0.md
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@@ -132,19 +132,35 @@ when running LND with an aux component injected (custom channels).
## Protocol Updates ## Protocol Updates
* `lnd` now [supports the new RBF cooperative close * `lnd` now [supports the new RBF cooperative close
flow](https://github.com/lightningnetwork/lnd/pull/9610). Unlike the old flow](https://github.com/lightningnetwork/lnd/pull/9610). This flow is based
flow, this version now uses RBF to enable either side to increase their fee on a new protocol `option_simple_close` defined with the bolt proposal
rate using their _own_ channel funds. This removes the old "negotiation" [1205](https://github.com/lightning/bolts/pull/1205)
logic that could fail, with a version where either side can increase the fee Unlike the old flow, this version now uses RBF to enable either side to
on their coop close transaction using their channel balance. increase their fee rate using their _own_ channel funds.
This replaces the old "negotiation" logic that could fail, with a version
where either side can increase the fee on their coop close transaction using
their channel balance.
This new feature can be activated with a new config flag: Channel peers must support the `option_simple_close` for this new protocol to
work. This new feature can be activated with a new config flag:
`--protocol.rbf-coop-close`. `--protocol.rbf-coop-close`.
With this new co-op close type, users can issue multiple `lncli closechannnel` With this new co-op close type, users can issue multiple `lncli closechannnel`
commands with increasing fee rates to use RBF to bump an existing signed co-op commands with increasing fee rates to use RBF to bump an existing signed co-op
close transaction. close transaction.
Please note this feature is not compatible with older LND versions.
When closing channels with peers running older versions, fee bumping the
closing transaction would be done via CPFP.
Regarding interoperation cross implementations, it currently only works
with Eclair v0.12.0 or up. Interop with other implementations should work
as they roll out support for this protocol.
This protocol currently does not support the channel types:
- Taproot channels
- Taproot asset channels
* [Support](https://github.com/lightningnetwork/lnd/pull/8390) for * [Support](https://github.com/lightningnetwork/lnd/pull/8390) for
[experimental endorsement](https://github.com/lightning/blips/pull/27) [experimental endorsement](https://github.com/lightning/blips/pull/27)
signal relay was added. This signal has *no impact* on routing, and signal relay was added. This signal has *no impact* on routing, and