Hi Sander, such things as ‘pseudo interfaces’ are local behavior, they're 
implementation specific.

Darren

> On Mar 16, 2020, at 1:39 PM, Sander Steffann <san...@steffann.nl> wrote:
> 
> Hi,
> 
>> How this relates to NETPGM
>> - SRv6 SIDs are IPv6 addresses.
>> - SRv6 SIDs are not necessarily interface addresses.
> 
> This will need some work, because according to 
> https://tools.ietf.org/html/rfc4291#section-2.1: "IPv6 addresses of all types 
> are assigned to interfaces, not nodes.". I think at least defining a 
> pseudo-interface (like a loopback) is required to comply with RFC 4291.
> 
> Speaking as an operator: this would also make SRv6 SIDs easier to understand 
> conceptually. It would also make it easier to debug because the SID would be 
> a "normal" IPv6 address on an interface, not something that isn't visible in 
> the RIB/FIB but is still handled in the local router. Having a RIB/FIB entry 
> and an interface (if only a pseudo one) would make existing debugging 
> practices easier to apply.
> 
> If NETPGM deviates from RFC 4291 I think that needs to be strongly justified. 
> Not deviating from existing standards should be the default :)
> 
> Cheers,
> Sander
> 

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