Re: [v6ops] why IPv6 EHs in the Real World

[Brian E Carpenter <[e-mail]>]

On 08/04/2015 00:36, Gert Doering wrote:
> Hi,
> 
> On Tue, Apr 07, 2015 at 12:06:39PM +0200, Alexandru Petrescu wrote:
>> This begs a question about particular hardware which may not distinguish
>> types, and thus force others to drop-all RHs, regardless of their type -
>> what is that hardware?

I don't see which word is hard to understand in "Packets containing
standardised and undeprecated Routing Headers SHOULD be forwarded by
default." That's the IETF standards requirement, and SHOULD means that
"there may exist valid reasons in particular circumstances to ignore a
particular item, but the full implications must be understood and
carefully weighed before choosing a different course."

Operators are adult enough to do the right thing, but for that to work,
products need to be properly designed.

     Brian

> 
> "Hardware+Software".  My current beef is Cisco IOS XR on ASR9001, which
> has hardware capable of doing about anything, and software that missed that
> particular call...
> 
> (Of course there's 6500/Sup720, which has hardware not capable of doing
> any EH header filtering, but that is *old* stuff and not particularily
> relevant here)
> 
> Gert Doering
>         -- NetMaster
>