Why is IPv6 so complicated? | Hacker News

A Hacker News thread argued IPv6 still feels harder than IPv4 because of complex addressing and configuration behavior.

Readers pointed to link-local gateways, privacy extensions, multicast, and competing autoconfiguration paths like SLAAC and DHCPv6.

Enterprise adoption also lags because teams are reluctant to give up NAT, even though IPv6 can still use it if needed.

Commenters noted firewalls can replace NAT as the security boundary, and IPv6’s large address space enables cleaner internal segmentation.