We've found another problem with IPv6: It's sparked a punch-up between top networks

In a report this month by Qrator Labs, researchers dug into what they are calling national internet reliability: the ability of a country's internet to handle a loss of connectivity from one or more ISPs.

The report notes that in 86 per cent of countries, IPv4 connectivity is significantly more reliable than with IPv6. IPv6 is, of course, supposed to be the internet's next-generation technology. There is nothing wrong with the protocol: it's triggering disputes between connectivity providers.