Re: IPv6 WG Last Call: <draft-ietf-ipv6-ra-flags-option-00.txt>

Brian E Carpenter <brian.e.carpenter@gmail.com> Fri, 22 June 2007 14:41 UTC

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Date: Fri, 22 Jun 2007 16:41:52 +0200
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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To: Brian Haberman <brian@innovationslab.net>
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Cc: IPv6 WG <ipv6@ietf.org>, bob.hinden@nokia.com
Subject: Re: IPv6 WG Last Call: <draft-ietf-ipv6-ra-flags-option-00.txt>
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If that's the only implication, I'm not sure it's worth
adding. It's a bit worrisome for future interoperability
(i.e. we shouldn't use this to add flags which will cause
failures if they are ignored).

     Brian

On 2007-06-22 16:02, Brian Haberman wrote:
> I would say that it if a node does not support this new option, it will
> probably not support any new functionality using the extended bit field.
>  I am rather neutral on whether adding such text is necessary.
> 
> Regards,
> Brian
> 
> 
> Brian E Carpenter wrote:
>> Sorry to be slightly late...
>>
>> I note that 2461bis says that unrecognized options MUST
>> be ignored. So that means that back-level implementations
>> will ignore any flag bits sent with this new option. Does
>> that have any side-effects that should be noted?
>>
>>     Brian
>>
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