Re: [v6ops] Extension Headers / Impact on Security Devices

Joe Touch <touch@isi.edu> Fri, 29 May 2015 20:24 UTC

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Date: Fri, 29 May 2015 13:23:25 -0700
From: Joe Touch <touch@isi.edu>
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To: "Fred Baker (fred)" <fred@cisco.com>
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Subject: Re: [v6ops] Extension Headers / Impact on Security Devices
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On 5/29/2015 12:39 PM, Fred Baker (fred) wrote:
> 
>> On May 27, 2015, at 10:24 AM, Joe Touch <touch@isi.edu> wrote:
>>
>> So I would think that they MUST NOT be added to IPv6 datagrams except by
>> the source.
> 
> You might consider commenting in Spring, then. They are designed as
> something that would be added in, and potentially removed again in, the
> network. They are something the ultimate source and destination need
> never see.

As I also noted, adding things "on behalf of" the source is equivalent.

If these are things the source never sees and used only on the path,
then they are *by definition* HBH options and should be indicated as such.

Joe