What practical task lets you confirm whether your own connection actually uses IPv6?

Visit a tester like test-ipv6.com, or inspect your interfaces — a 2000::/3 global address (not just an fe80:: link-local) means you have working IPv6.

Quick self-checks:

• Web test: test-ipv6.com scores your IPv6 readiness and reachability
• On Linux/macOS: ip -6 addr / ifconfig — look for a global address (starts with 2…/3…), not only the always-present fe80:: link-local
• On a home router (e.g. FRITZ!Box): the status page shows the public IPv6 (WAN) prefix and the prefix delegated to your LAN

If you only ever see fe80:: addresses, your machine has link-local IPv6 but no global IPv6 connectivity to the internet.

Tip: Other handy resources: ultratools IPv6 Info for address lookups, and the German BSI's ISi-LANA guide for secure IPv6 configuration.