> ## Documentation Index
> Fetch the complete documentation index at: https://docs.monad.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# v0.12.6

<Warning>
  Please do not proceed until Monad Foundation provides notice.
</Warning>

## Instructions for node operators

### 1. SSH into the node as `root` user

### 2. Update configuration file

Add the `ping_rate_limit_per_second` parameter to the `[peer_discovery]` section in your configuration file:

```bash theme={null}
nano /home/monad/monad-bft/config/node.toml
```

Add the following line to the `[peer_discovery]` section:

```toml theme={null}
[peer_discovery]
self_address = "YOUR_IP:8000"
self_record_seq_num = 0 # This remains the same as your current self_record_seq_num
self_name_record_sig = "YOUR_SIGNATURE"
refresh_period = 20
request_timeout = 5
unresponsive_prune_threshold = 3
last_participation_prune_threshold = 1000
min_num_peers = 1
max_num_peers = 450
ping_rate_limit_per_second = 100  # This is new to 0.12.6
```

### 3. Check systemctl overrides (if applicable)

<Warning title="Important for operators with custom systemctl overrides">
  This release adds `--persisted-peers-path /home/monad/monad-bft/config/peers.toml` to the `monad-bft` service startup. If you have existing systemctl overrides for `monad-bft`, you must ensure this flag is included in your override configuration.
</Warning>

To check if you have overrides:

```bash theme={null}
systemctl cat monad-bft | grep -A 10 "override"
```

If you have an existing override, edit it to include the persisted peers path:

```bash theme={null}
sudo systemctl edit monad-bft
```

Ensure your override includes:

```
--persisted-peers-path /home/monad/monad-bft/config/peers.toml
```

### 4. Upgrade monad package

```bash theme={null}
sudo apt update && sudo apt install --reinstall monad=0.12.6 -y --allow-downgrades --allow-change-held-packages
```

### 5. Restart the services and verify

```bash theme={null}
sudo systemctl restart monad-bft monad-execution monad-rpc
sudo systemctl status monad-bft monad-execution monad-rpc --no-pager -l
```

Expected output: All services should show `Active: active (running)`

### 6. Verify the correct version is running

```bash theme={null}
monad-rpc --version
```

Expected output:

```json theme={null}
monad-rpc {"commit":"cced63c687c6ab67846c94bc9fd6d6ae60272cd4","tag":"v0.12.6","branch":"","modified":true}
```

<Info title="Sidecar CPU core configuration">
  Sidecars need their own CPU cores and **cannot share cores** with monad processes. Monad uses all 16 cores on a standard setup (cores 0-15), so running a sidecar on the same cores will cause performance issues.
</Info>

## Patch notes

Please refer to the public changelog for [`v0.12.6`](/developer-essentials/changelog/releases#v0126).

### Important updates for node operators

* **\[Node ops / Peer Discovery]** Add ping rate limiting configuration
  * New **required** parameter: `ping_rate_limit_per_second = 100` in `[peer_discovery]` section
  * Prevents excessive ping traffic and improves network stability