Native Access Stuck Waiting for Connection: Optimizing Boot Times on a Debian 10 Server

When troubleshooting issues with your network interfaces on a Debian 10 server, you may encounter problems such as 'native access stuck waiting for connection.' In this article, we'll explore the potential causes of this issue and provide guidance on how to optimize boot times by modifying your network interface settings.

Identifying the Problem

The relevant output from `dmesg -T` shows that the issue is related to IPv6 configuration:

```

IPv6: ADDRCONF(NETDEV_UP): enp5s0: link is not ready

```

This error message indicates that the network interface (enp5s0) is not ready to accept connections. To resolve this issue, you may need to adjust your network interface settings or troubleshoot other components of your network infrastructure.

Allow-Hotplug vs Auto

In your `/etc/network/interfaces` file, you have set the `allow-hotplug` directive for some interfaces and `auto` for others. While there are benefits to using `allow-hotplug`, such as improved boot times, it's essential to consider potential interface binding issues that may arise when services depend on specific network interfaces.

In your case, changing the br0 interface to use `allow-hotplug` instead of `auto` resolved some issues, but you may still experience problems with other services relying on this interface. Therefore, it's crucial to weigh the pros and cons of using `allow-hotplug` versus `auto`.

Improving Boot Times

To optimize boot times, consider the following strategies:

1. Use allow-hotplug for interfaces: As mentioned earlier, setting `allow-hotplug` can improve boot times by allowing interfaces to start in parallel.

2. Adjust your /etc/network/interfaces file: Review your network interface settings and ensure that they are optimized for your specific use case.

3. Troubleshoot other components: Identify any issues with your network infrastructure or services that may be contributing to slow boot times.

In conclusion, the 'native access stuck waiting for connection' issue on a Debian 10 server can be caused by various factors, including IPv6 configuration errors and interface binding issues. By adjusting your network interface settings using `allow-hotplug` or `auto`, you can optimize boot times and improve the overall performance of your system. Remember to weigh the pros and cons of each approach and consider potential service dependencies when modifying your network interface configurations.

Native access stuck waiting for connection