Re: Generic anycast addresses...

[Mikael Abrahamsson <[e-mail]>]

On Thu, 30 May 2019, Ted Lemon wrote:

I tried to read up on this thread, and I don't think I understand the 
use-case still.

However, since I didn't see anyone mention it in the discussion yet we do 
have a WKP from another somewhat similar deployment case (unless I didn't 
understand correctly):

https://tools.ietf.org/html/rfc6052#section-2.1 , the 64:ff9b::/96 prefix 
for NAT64, out of global scope. However, you typically need the traffic to 
only hit one of these (because of state), so I guess they will not be BGP 
anycasted.

For AFTRs for LW4o6 and MAP-E (which are stateless and thus works nicely 
with BGP anycast), people will deploy these using BGP anycast in their 
networks, numbered out of their own LIR allocated GUA global scope address 
space.

So... again, I'm not sure I didn't miss just everything in the discussion, 
so if I'm completely off above, could someone please sum up the discussion 
again with what you've agreed on?

Numerous times in the discussion the term "scoped address" was used, but I 
never understood what scope was intended in the statement.

-- 
Mikael Abrahamsson    email: [e-mail]