packet number text limitation on 32 bits of packet number

[mcmanus]

5.8 introduces the fact that only the least significant bits of a packet number are transmitted and it goes on to say at most 32.

But acks can use 48.

I suggest fixing by just leaving out the number.

[mirjak]

I was about to fill the same issue this afternoon (and then got distracted). We could remove the number completely or say that the internal packet number size must be at least 64 bits

[martinthomson]

I think that we separately agreed to remove the 48 from the ACK frame.

[larseggert]

Yes, see #507 (and #508)

[larseggert]

-04 still allows 48 bits in the ACK frame?

[martinthomson]

Only because we didn't get around to making those changes. We agreed to move fast on -04 and we didn't have a PR for removing 48.

[janaiyengar]

this is a dup of #507 so closing.

[ianswett]

I didn't realize we were cutting 04 today, but PR #629 has now fixed the 48 bit issue.