MidnightBSD security update 0.5.11-RELEASE

MidnightBSD 0.6-CURRENT & 0.5.11-RELEASE now contain fixes for two security issues. Users are advised to update and build a new kernel.

The previous fix for IGMP had an overflow issue. This has been corrected.

ipv6: The Neighbor Discover Protocol allows a local router to advertise a
suggested Current Hop Limit value of a link, which will replace
Current Hop Limit on an interface connected to the link on the MidnightBSD
system.

Obtained