why inet6 for certain ports for sysinst?

"Jeremy C. Reed" <[email protected]>
Newsgroups gmane.os.netbsd.devel.installation
Message-ID <[email protected]> 
It looks like IPv6 is only available in sysinst for amd64, cats, hp700, 
i386, ibmnws, macppc, ofppc, rs6000, x68k, zaurus. (This means that 
ping6 and rtsol aren't installed; and the autoconfiguration code is not 
included in sysinst.)

I don't know why ports like sparc64 which have INET6 in kernel are 
excluded. I may be reading this wrong though.

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