I started playing a CTF called Necromancer from Vulnhub. It was working just fine. I set the network adapter to bridged mode and I was able to capture every flag up to the point where I had to exploit SNMP. In other words, working as expected. snmpwalker wasn't working the way I expected and a bit of troubleshooting determined that I couldn't even ping the host from my Kali VM or even my main Windows box.
I ran the following command from my Kali VM and it appeared.
However, I do know my arp list doesn't always update. One of my machines had appeared twice but it's still worth noting.
What I can infer from this is that it IS connecting and it IS obtaining a valid IP address but something is preventing it from being pinged let alone scanned. What can I do to resolve this problem? I want to finish my game.