# Release Notes
- [Bug Fixes](#bug-fixes)
- [New Features](#new-features)
    - [Functional Enhancements](#functional-enhancements)
    - [RPC Additions](#rpc-additions)
    - [lncli Additions](#lncli-additions)
- [Improvements](#improvements)
    - [Functional Updates](#functional-updates)
    - [RPC Updates](#rpc-updates)
    - [lncli Updates](#lncli-updates)
    - [Breaking Changes](#breaking-changes)
    - [Performance Improvements](#performance-improvements)
    - [Deprecations](#deprecations)
- [Technical and Architectural Updates](#technical-and-architectural-updates)
    - [BOLT Spec Updates](#bolt-spec-updates)
    - [Testing](#testing)
    - [Database](#database)
    - [Code Health](#code-health)
    - [Tooling and Documentation](#tooling-and-documentation)

# Bug Fixes

- [Fixed](https://github.com/lightningnetwork/lnd/pull/9893) a memory leak by
  threading through parent context.

- [Fix a serialisation bug](https://github.com/lightningnetwork/lnd/pull/9856) 
  that would occur when an attempt was made to write a backup file for a channel 
  peer that has advertised an address that we do not yet know how to parse. 

- Fixed [a case](https://github.com/lightningnetwork/lnd/pull/9854) where the
  `BumpFee` doesn't give an error response.

- Fixed [a case](https://github.com/lightningnetwork/lnd/pull/9872) where a
  peer would not disconnect properly when both peers supported the new
  "rbf-coop-close" feature leaving the peer connection in a borked state.

- Fixed [a case](https://github.com/lightningnetwork/lnd/pull/9890) where LND
  would crash because of misaligned of a data struct on 32 bit systems.

- Fixed [a case](https://github.com/lightningnetwork/lnd/pull/9876) where a peer
  may be treated as restricted peer although it used to have a channel with the
  node.

# New Features

## Functional Enhancements

- [Increase](https://github.com/lightningnetwork/lnd/pull/9875) gossip sync
  buffer to take the pressure of the read handler.

## RPC Additions

## lncli Additions

# Improvements

## Functional Updates

- [The correct production feature bit for RBF coop close is now
  signaled](https://github.com/lightningnetwork/lnd/pull/9858).

## RPC Updates

## lncli Updates

## Code Health

## Breaking Changes

## Performance Improvements

## Deprecations

### ⚠️ **Warning:** The following RPCs will be removed in release version **0.21**:

| Deprecated RPC Method | REST Equivalent | HTTP Method | Path | Replaced By |
|----------------------|----------------|-------------|------------------------------|------------------|
| [`lnrpc.SendToRoute`](https://lightning.engineering/api-docs/api/lnd/lightning/send-to-route/index.html) <br> [`routerrpc.SendToRoute`](https://lightning.engineering/api-docs/api/lnd/router/send-to-route/) | ❌ (No direct REST equivalent) | — | — | [`routerrpc.SendToRouteV2`](https://lightning.engineering/api-docs/api/lnd/router/send-to-route-v2/) |
| [`lnrpc.SendPayment`](https://lightning.engineering/api-docs/api/lnd/lightning/send-payment/) <br> [`routerrpc.SendPayment`](https://lightning.engineering/api-docs/api/lnd/router/send-payment/) | ✅ | `POST` | `/v1/channels/transaction-stream` | [`routerrpc.SendPaymentV2`](https://lightning.engineering/api-docs/api/lnd/router/send-payment-v2/index.html) |
| [`lnrpc.SendToRouteSync`](https://lightning.engineering/api-docs/api/lnd/lightning/send-to-route-sync/index.html) | ✅ | `POST` | `/v1/channels/transactions/route` | [`routerrpc.SendToRouteV2`](https://lightning.engineering/api-docs/api/lnd/router/send-to-route-v2/) |
| [`lnrpc.SendPaymentSync`](https://lightning.engineering/api-docs/api/lnd/lightning/send-payment-sync/index.html) | ✅ | `POST` | `/v1/channels/transactions` | [`routerrpc.SendPaymentV2`](https://lightning.engineering/api-docs/api/lnd/router/send-payment-v2/index.html) |
| [`router.TrackPayment`](https://lightning.engineering/api-docs/api/lnd/router/track-payment/index.html) | ❌ (No direct REST equivalent) | — | — | [`routerrpc.TrackPaymentV2`](https://lightning.engineering/api-docs/api/lnd/router/track-payment-v2/) |

🚨 **Users are strongly encouraged** to transition to the new **V2 methods** before release **0.21** to ensure compatibility:

| New RPC Method | REST Equivalent | HTTP Method | Path |
|---------------|----------------|-------------|------------------------|
| [`routerrpc.SendToRouteV2`](https://lightning.engineering/api-docs/api/lnd/router/send-to-route-v2/) | ✅ | `POST` | `/v2/router/route/send` |
| [`routerrpc.SendPaymentV2`](https://lightning.engineering/api-docs/api/lnd/router/send-payment-v2/index.html) | ✅ | `POST` | `/v2/router/send` |
| [`routerrpc.TrackPaymentV2`](https://lightning.engineering/api-docs/api/lnd/router/track-payment-v2/) | ✅ | `GET` | `/v2/router/track/{payment_hash}` |

# Technical and Architectural Updates
## BOLT Spec Updates

## Testing

## Database

## Code Health

## Tooling and Documentation

# Contributors (Alphabetical Order)

* Elle Mouton
* ffranr
* Oliver Gugger
* Yong Yu
* Ziggie