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From: itojun@itojun.org (Jun-ichiro itojun Hagino)
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Subject: Re: suggested patches for netinet6/
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> >> > + nd6_nud_hint() is only called as nd6_nud_hint(NULL, NULL, 0);
> >> >   in some cases from netinet/tcp_input.c
> >> >   With these args, the routine is a NOP. I propose to remove it
> >> >   (and the associated field, ln_byhint, in struct llinfo_nd6)

	on other OSes we call nd6_nud_hint() in a useful way.  please do not
	remove it. (more diffs between OSes = more pain for us)

itojun