So you're trying to connect to Dolphin on the same computer that is running the MKW server, but the MKW server is in a virtual machine (not Dolphin)? You can try something like this...
Remove any custom DNS settings you have on your Wii Menu on Dolphin if you do, leave it on Auto Obtain DNS.
Regarding DNS on the computer OS, I personally use this guide - https://mkwii.com/showthread.php?tid=1184
Just replace the old ALTWFC public IP with your machine's private IP.
Another concern is making sure you have proper port forwarding on your virtual machine. That could be quite the rabbit hole to venture into to if that's the issue. Google would be your friend on that one.
Remove any custom DNS settings you have on your Wii Menu on Dolphin if you do, leave it on Auto Obtain DNS.
Regarding DNS on the computer OS, I personally use this guide - https://mkwii.com/showthread.php?tid=1184
Just replace the old ALTWFC public IP with your machine's private IP.
Another concern is making sure you have proper port forwarding on your virtual machine. That could be quite the rabbit hole to venture into to if that's the issue. Google would be your friend on that one.