I highly recommend to do the easiest step: Use VMware and choose to replicate your current LAN device. This way you can just use the same configuration than on your current pc except for the ip address of course. It makes things so much easier to setup.
Otherwise you'd check on how networking actually works. It's no use to simply replicate a tutorial, you'd understand what you're doing there and what each of these options actually do.
Thank you my friend @regal!
After adding the missing 6th skills vnums in the "special.active_skill_list", my quest script recognized the skills and prompted me their vnum.
I managed to associate that orphan vnums with some translated strings:
Looking around in locale.lua I noticed that every skill vnum is paired with a translated string found in translate.lua, so I just created new strings to match the said orphan vnums and everything worked like a charm!
Your help was precious,