[zeromq-dev] [PATCH] IPv6 changes to 4.0

Martin Sustrik sustrik at 250bpm.com
Mon Aug 22 19:12:42 CEST 2011

On 08/22/2011 03:31 PM, Steven McCoy wrote:

> Because you can easily have 2-4 IPv6 addresses per adapter.  You always
> have the link-local scope one, but when you add real routable addressing
> you can end up with a lot more.  I think my Sparc has four or five and
> that's in the minimum configuration.  When the Sparc is up and running
> with its IPv6 router it then proceeds to hand out another IPv6 address
> to everyone else on the network.  Linux can have static IPv6 addresses
> so it gains another.

Ok. So AFAIU, even if you specify the interface, it can still have 
different addresses for different scopes (global, local etc.) right?

What I miss is how can binding to inaddr6_any with specific scope_id 
resolve to a particular interface. There may be several interfaces with 
the specified scope, no? Or is scope_id actually a zone_id?

Sorry for being stupid, I have no experience with IPv6 whatsoever.


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