RADIX_MPATH support

[Li, Qing]

    Hi,

    Is RADIX_MPATH still supported in KAME ?

    Enabling RADIX_MPATH on FreeBSD 5.4 panic on bootup and the
    system just reset. I cannot get into the debugger.

    After investigating the same code on a FreeBSD 5.4 based variant
    system, I found the deletion code appears to be a bit problematic
    and crashes my box.

    I have patched the following files, and at least on my system
    the code appears to be functioning correctly.

		kame/freebsd5/sys/net/route.c
		kame/freebsd5/sys/net/rtsock.c
		kame/kame/sys/net/radix_mpath.c
		kame/kame/sys/net/radix_mpath.h

    The rtsock.c file does not compile due to "gate" being undefined
    once the RADIX_MPATH option is enabled.

    I checked the revision numbers of each file and all seem to be
    current.

    Has anyone else run into the same problem ?

    Thanks,

    -- Qing