It's the full addressing of the host... but you're right, I guess it was a bit of a non-sequitor. The only parts you have to actually know are the xx/xxx, which

It's the full addressing of the host... but you're right, I guess it was a bit of a non-sequitor. The only parts you have to actually know are the xx/xxx, which is roughly the same amount of bits. They could even both be, say, "42", so you're remembering the same thing for both.