Unable to ping or connect to Ubuntu Mate 22.04 PC with 2 network connections - Wifi to Internet , Ethernet to local network
Tags: linux, windows, ubuntu, networking
Published: 2023-08-22 10:05:24

Unable to Ping or Connect to Ubuntu Mate 22.04 PC with 2 Network Connections - Wifi to Internet, Ethernet to Local Network
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As a software developer, you may encounter various networking issues while working with different operating systems. One such problem that Ubuntu Mate 22.04 users might face is the inability to ping or connect to their PC when it has two network connections - one via WiFi to the internet and another through Ethernet to a local network.

When you have multiple network connections on your Ubuntu Mate 22.04 PC, it can sometimes lead to confusion and conflicts, resulting in connectivity issues. Let's explore some possible reasons and solutions for this problem.

### 1\. Network Configuration Conflict

One common reason for being unable to ping or connect to your Ubuntu Mate PC is a network configuration conflict. Your PC might be using the wrong network interface for communication, causing the connection to fail.

To resolve this, you can manually set the network interface priority. Open a terminal and type the following command:

`sudo nano /etc/netplan/01-network-manager-all.yaml`

Inside the file, you'll find a section called `ethernets` and another called `wifis`. Make sure the Ethernet connection is listed before the WiFi connection. Save the file and apply the changes by running:

`sudo netplan apply`

### 2\. Firewall Configuration

Another possible reason for the connectivity issue could be the firewall configuration on your Ubuntu Mate PC. The firewall might be blocking incoming connections on the Ethernet interface, preventing communication with the local network.

To check your firewall settings, open a terminal and run the following command:

`sudo ufw status`

If the status is active, you can allow incoming connections on the Ethernet interface by running:

`sudo ufw allow in on eth0`

Replace `eth0` with the appropriate interface name for your Ethernet connection. Retry pinging or connecting to your PC and see if the issue is resolved.

### 3\. Network Manager Issues

In some cases, the Network Manager on Ubuntu Mate 22.04 might be causing the problem. It could be mismanaging the network interfaces or not properly handling the routing of packets.

A temporary workaround is to restart the Network Manager service. Open a terminal and enter:

`sudo service network-manager restart`

This will restart the Network Manager and might resolve the connectivity issue.

Hopefully, one of these solutions will help you resolve the problem of being unable to ping or connect to your Ubuntu Mate 22.04 PC with two network connections. Remember, networking issues can sometimes be tricky, but with a little bit of patience and troubleshooting, you can overcome them.

### References:

*   Ubuntu Mate Official Website: [https://ubuntu-mate.org/](https://ubuntu-mate.org/)
*   Ubuntu Documentation: [https://help.ubuntu.com/](https://help.ubuntu.com/)

### If you are interested in troubleshooting network connectivity issues in software development, check out our other articles for more insights and solutions.

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