[Midnightbsd-cvs] src: in6.c: The SIOCSIFINFO_IN6 ioctl is missing a necessary permissions

[laffer1 at midnightbsd.org]

Log Message:
-----------
The SIOCSIFINFO_IN6 ioctl is missing a necessary permissions check.

Don't let everyone on the planet (with local access) change the properties on the ipv6 interfaces.

Modified Files:
--------------
    src/sys/netinet6:
        in6.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/netinet6/in6.c?r1=1.5&r2=1.6)