SA_FLAG_IFACE
sa->flags & SA_FLAG_REPLACED || sa->flags & SA_FLAG_IFACE ||
if ((sa->flags & SA_FLAG_IFACE) != (sa2->flags & SA_FLAG_IFACE))
if (sa->flags & SA_FLAG_IFACE)
sa->flags |= SA_FLAG_IFACE;
sa->flags & SA_FLAG_IFACE ||
if (sa->flags & SA_FLAG_IFACE) {