Function defrouter_reset

freebsd/netinet6/nd6_rtr.c:828–866

* Remove all default routes from default router list. */

 * Remove all default routes from default router list.
 */
void
defrouter_reset(void)
{
	struct nd_defrouter *dr, **dra;
	int count, i;

	count = i = 0;

	/*
	 * We can't delete routes with the ND lock held, so make a copy of the
	 * current default router list and use that when deleting routes.
	 */
	ND6_RLOCK();
	TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry)
		count++;
	ND6_RUNLOCK();

	dra = malloc(count * sizeof(*dra), M_TEMP, M_WAITOK | M_ZERO);

	ND6_RLOCK();
	TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry) {
		if (i == count)
			break;
		defrouter_ref(dr);
		dra[i++] = dr;
	}
	ND6_RUNLOCK();

	for (i = 0; i < count && dra[i] != NULL; i++) {
		defrouter_delreq(dra[i]);
		defrouter_rele(dra[i]);
	}
	free(dra, M_TEMP);

	/*
	 * XXX should we also nuke any default routers in the kernel, by
	 * going through them by rtalloc1()?
	 */
}

/*
 * Look up a matching default router list entry and remove it. Returns true if a