This week, experts sent two drafts to the Internet Engineering Task Force (IETF)--the technical standards-setting body for the Internet -- proposing different ways of fixing a problem in the way that Internet Protocol version 6 (IPv6) allows the source of network data to determine its path through the network. The drafts recommend that the IPv6 feature should either be eliminated or, at the very least, disabled by default.

The specification, known as the Type 0 Routing Header (RH0), allows computers to tell IPv6 routers to send data by a specific route.

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