Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop

[Joe Touch <[e-mail]>]

Hi, Brian,

On 11/2/2012 1:17 AM, Brian E Carpenter wrote:
...
>> Isn't the real bug the fact that the option numbers don't indicate
>> whether an option is HBH or not?
>
> Why is that a problem? The extension header that contains the options
> tells you that (0 for hbh options, 60 for destination options).

Except for extension headers that are yet to be defined.

I.e., while you're fixing the order, another key issue is that:

	all HBH options MUST occur only in the HBH extension header

(similarly, 60 isn't strictly the only destination header; see esp. the 
end of Sec. 4.6, but that is much less problematic)

Frankly, the HBH extension header is misnamed; AFAICT, this is intended 
to be the true forwarding plane options. Other other currently defined 
options (AFAICT), including the routing option, occur only when the 
router is really acting as a host (i.e., where that router owns the 
destination IP address of the packet).

Joe