Size in which regard though? They're hexadecimals. If they were numbers or letters (0-9, a-z instead of 0-0, a-f) the number of bits would be still high, but wi

Size in which regard though? They're hexadecimals. If they were numbers or letters (0-9, a-z instead of 0-0, a-f) the number of bits would be still high, but with lower amount of characters. You might loose something beautiful as autoconfig but who needs a /64 for one device anyway? Plus, it does not work well for anonymity. You might as well randomize it.