What Causes a Destination Host Unreachable Error?
There are many possible reasons for getting a “destination host unreachable” error, including things as simple as erroneously connected cables or an overly aggressive firewall. As you can see from the details below, we’re trying to ping a specific network device IP address, but the response we’re getting doesn’t provide much detail beyond the error itself: So, what’s going on here? In simple terms, we’re trying to communicate with a device at the specified IP address, but the remote gateway is unable to direct our ping request to the host itself, and so it sends an echo message back to say that it can’t be found.
How to Fix a Destination Host Unreachable Error
In diagnosing the error, it’s useful to follow the steps to fix an IPv6 error first to see if they resolve your networking issues. If the problem persists, you need to look at your network infrastructure to establish where the issue is. For this example, we’re going to check our Default Gateway settings, then follow the steps to fix them.
This confirms that 151.101.194.1.241 is currently configured as the default gateway, but when we look at our actual device’s IP address, we see it’s slightly different: 151.101.194.1.244.
How to Add the Correct Gateway Address for a Destination Host
From the information gained above, we can see we need to add the correct gateway address via our Local Area Network (LAN) settings. To do this, follow these steps.
