OpenBSD Errata: June 27th, 2017 (icmp6_linklocal)

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OpenBSD Errata: June 27th, 2017 (icmp6_linklocal)

Alexander Bluhm-2
An errata patch for icmp6_linklocal has been released for OpenBSD 6.1.

When pinging an IPv6 link-local address, the reflected packet had ::1
as source address. The echo reply was ignored as it must be from the
link-local address.

Binary updates for the amd64 and i386 platforms are available via the
syspatch utility. A source code patch can be found on the respective
errata page:

  https://www.openbsd.org/errata61.html

As this affects the kernel, a reboot will be needed after patching.

If IPv6 is not configured on your system, this issue does not affect you.