---
title: Route Synchronization
---

# Route Synchronization

The route synchronization feature keeps the kernel routing table in sync with WireGuard's _AllowedIPs_ setting.

This synchronization is bi-directional:
- Networks with are found in a Peers AllowedIP list will be installed as a kernel route.
- Kernel routes with the peers link-local IP address as next-hop will be added to the Peers _AllowedIPs_ list.

This rather simple feature allows user to pair cunicu with a software routing daemon like [Bird2](https://bird.network.cz/) while using a single WireGuard interface with multiple peer-to-peer links.

## Configuration

import ExampleConfig from '../../src/components/ExampleConfig';

<ExampleConfig section="rtsync" />