Re: 2.4.x Kernel, ECN And Problem Websites
On Thu, Apr 26, 2001 at 05:52:10AM +1000, Daniel Stone wrote:
> Yes, I know this. The bits are officially "reserved" in the RFC. Some people
> took this to mean, "must be zero".
This reminds me of my favourite quote from RFC2795:
The Version, Sequence Number, Protocol Number, and Reserved fields
are 32 bit unsigned integers. For IMPS version 1.0, the Version must
be 1. Reserved must be 0 and will always be 0 in future uses. It is
included because every other protocol specification includes a
"future use" reserved field which never, ever changes and is
therefore a waste of bandwidth and memory.   .
(Reference 7 is in fact to the TCP standard :)