I wish I had setup an identity management system sooner. Been self-hosting for years and about a year ago took the full plunge into setting up all my services behind Authentik. Its a game changer not having to deal with all the usernames and passwords.

In a similar vein, before Authentik, I used Vaultwarden to manage all my credentials. That was also a huge game changer with my significant other. Being able to have them setup their own account and then share credentials as an organization is super handy.

Thats just how IPv6 works. You get a delegate address from your ISP for your router and then any device within that gets it own unique address. Considering how large the pool is, all address are unique. No NAT means no port forwarding needed!