> On Feb 13, 2017, at 3:20 PM, Veerendranatha Reddy Vallem 
> <[email protected]> wrote:
> 
> Using ULA for Adj segment/special segment is good option. 


absolutely, ULA make sense in many use cases are fully supported in the segment 
routing architecture.


> We can generate these addresses automatically and assign for adjacent  
> neighbors.

sure. 



s.


> 
> Thanks and Regards,
> Veerendranath
> 
> -----Original Message-----
> From: Brian E Carpenter [mailto:[email protected]] 
> Sent: 11 February 2017 01:33
> To: Stefano Previdi (sprevidi) <[email protected]>; Veerendranatha Reddy 
> Vallem <[email protected]>
> Cc: [email protected]; 
> [email protected]; [email protected]; [email protected]
> Subject: Re: [IPv6 SR] Regarding 128 bits IPv6 address in Segment List of SRH
> 
> On 10/02/2017 22:31, Stefano Previdi (sprevidi) wrote:
> ...
>> In the IPv6 dataplane a SID being an IPv6 address, it makes the SID a global 
>> IPv6 address (even in the case of Adj-SIDs). This of course is orthogonal to 
>> the control plane that may or may not advertise such address.
> 
> By the way, be careful with the phrase "global IPv6 address". I think you 
> mean "global scope" (which includes ULA), not "globally reachable" (which 
> excludes ULA).
> 
>   Brian

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