[pilif]

> (And L2 switching is broken by design anyway, but that's a story of hysterical raisins for another day)

absolutely, but in ipv4, the breakage has the effect of some niche-applications like TV streaming to client-machines breaking whereas in ipv6 it has the effect of the whole network breaking.

The applications broken in v4 are so niche that most people won't notice.

>SSDP (the tech underlying UPNP) already covers IPv6, there's no need to add new one

yes, but it's very badly supported still. I have not seen this work in any home-network yet, be it because of broken OSes, broken applications or broken router software.

>This also includes proper handling of ICMPv6

You're making me hopeful. Back when I was setting things up in 2014, the situation was a minefield of brokenness, sometimes even with UI showing huge warnings about my explicit allow-ICMP-rule I had to add after the default was to block all ICMP.

[90minuteAPI]

> The applications broken in v4 are so niche that most people won't notice.

Except when you’re building these applications. Then it’s infuriating! Maybe more often a feeling of hopelessness than anger.