IP Registration Lessons: IPv6, TTL Auto-Renewal, and SSO That Wasn't Worth It
After deploying the self-service IP registration system for family Jellyfin access, three things came up within the first day of real-world testing. IPv6 Privacy Extensions Break Registration The first family member to register got an IPv6 address. The Worker stored it with a /128 (exact match), but when she visited media.8devops.com, her phone used a different IPv6 address. IPv6 privacy extensions rotate the interface identifier (the last 64 bits) on every connection to prevent tracking. ...