Errata patches for the generic tunnel interface driver have been released for OpenBSD 6.3.
In the gif(4) interface, use the specified protocol for IPv6, plug an mbuf leak, and avoid a use after free. Binary updates for the amd64, i386, and arm64 platforms are available via the syspatch utility. Source code patches can be found on the errata page: https://www.openbsd.org/errata63.html As this affects the kernel, a reboot will be needed after patching.
