Should distributors disable IPv4-mapped IPv6?
Should distributors disable IPv4-mapped IPv6?
[Distributions] Posted May 25, 2016 15:02 UTC (Wed) by corbet
By all accounts, the Internet's transition to IPv6 has been a slow affair. In recent years, though, perhaps inspired by the exhaustion of the IPv4 address space, IPv6 usage has been on the rise. There is a corresponding interest in ensuring that applications work with both IPv4 and IPv6. But, as a recent discussion on the OpenBSD mailing list has highlighted, a mechanism designed to ease the transition to an IPv6 network may also make the net less secure — and Linux distributions may be configured insecurely by default.