Re: TCP timestamp option

Meelis Roos (
Thu, 21 May 1998 22:07:40 +0300

AK> To align the timestamp option to a 32bit boundary. Many CPUs get
AK> a significant slowdown while accessing non aligned data.

OK, but now there are nop,nop,timestamp or even
nop,nop.timestamp,nop,nop,[|tcp] options by default.
(BTW, what's [|tcp] ?)

This seems to forbid sacks from being used. SackOK is used in SYN packets,
this is not a problem. But I can see sack options only when timestamps
are off. Do they take too much room or is there another reason?

2.1.101 on both ends.

Meelis Roos (

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