I have read many posts in this subreddit and so many recommend using a domain (buying it) and then registering DNS.
Maybe I misunderstood because I’m new, but in theory isn’t it enough to use a DNS in lan like pihole, and then from the client browser using Wireguard simply write the domain defined on pihole? (Maybe even configuring nginx to have all the ports pointing to the correct services)
Am I wrong?
Yes, because how will you acces wireguard? Whats your endpoint?
I mean its all fine if you have a static IP which never changes but that usually is not the case anymore. So you need a domainname to update. Also vpn.youlab.tld is esier to remember than 131.234.142.83
Well ddns is just dns which get auto updated via helper script which you can do yourself on your own domain aswell. So yes Point still stands. And a domain which is yours might still be nicer than a bottom of the barrle subdomain. Of which you often also don’t get unlimited