I was trying to troubleshoot a network issue the other day and I found myself staring at a ping command that just wouldn't work.

I was trying to ping a website, but it kept saying 'unknown host'. I was confused - I knew the website was up and running, so why couldn't I ping it?

It turns out, the issue was with the DNS resolution. The ping command relies on the DNS to resolve the hostname to an IP address.

If the DNS can't resolve the hostname, the ping command will fail.

To fix the issue, I used the 'dig' command to check the DNS resolution.

I realized that the DNS server I was using wasn't able to resolve the hostname. I switched to a different DNS server and voila! The ping command started working.

The takeaway from this experience is that networking issues can often be complex and multi-layered.
It's not always just a simple matter of 'it works' or 'it doesn't work'.
Sometimes, you need to dig deeper (pun intended) to understand what's really going on.

What's your go-to command for troubleshooting network issues?