Hahaha, that one could very well be adopted faster than IPv6 if that ever happens. Apart from this, this shouldn't be a a laughing matter. Such a feature could

Hahaha, that one could very well be adopted faster than IPv6 if that ever happens. Apart from this, this shouldn't be a a laughing matter. Such a feature could be used for filtering based on origin, protocol and destination. Is that a good thing, or a bad thing? It depends on what is being filtered and the reason. The risk here is that mainstream protocols could appear with the assumption that they won't be filtered across domains. Censorship-resistant protocols should make sure they wouldn't be filtered across domains due to this (basing them on https should be fine for the foreseeable future). "Luckilly", company networks are sometimes worse than countries that censor the net. With such prevalent censorship, developers are incentivized to develop censorship-resistant protocols.