HH_NONE
ins->ipdn_v4in->h_hint = HH_NONE;
ins->ipdn_v4out->h_hint = HH_NONE;
ins->ipdn_v6in->h_hint = HH_NONE;
ins->ipdn_v6out->h_hint = HH_NONE;
case HH_NONE :
ASSERT(new->hi_hook.h_hint != HH_NONE);
case HH_NONE :
(x)->h_hint = HH_NONE; \