[Midnightbsd-cvs] src: sys/sys: Supply unique st_dev, st_ino value pair for fstat(2) on

[laffer1 at midnightbsd.org]

Log Message:
-----------
Supply unique st_dev, st_ino value pair for fstat(2) on pipes.  This is required with sus4 and fixes compatibility problems with several linux centric daemons. This is a port from FreeBSD 10-CURRENT.

Filter out some bad traffic with ipv6 /ipfw.

Modified Files:
--------------
    src/sys/fs/devfs:
        devfs_devs.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/fs/devfs/devfs_devs.c?r1=1.5&r2=1.6)
    src/sys/kern:
        sys_pipe.c (r1.4 -> r1.5)
        (http://cvsweb.midnightbsd.org/src/sys/kern/sys_pipe.c?r1=1.4&r2=1.5)
    src/sys/netinet:
        ip_fw2.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/netinet/ip_fw2.c?r1=1.5&r2=1.6)
    src/sys/sys:
        conf.h (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/sys/conf.h?r1=1.5&r2=1.6)
        pipe.h (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/sys/pipe.h?r1=1.2&r2=1.3)