[address-policy-wg] IXP assignments and transfers

On Thu, Sep 03, 2015 at 03:17:47PM +0200, Andrea Cima wrote:
>185.1.0.0/16 is the /16 reserved for IXP assignments.
>
>However, according to the RIPE-649: "/IP space returned by IXPs will 
>be added to the reserved pool maintained for IXP use/" [1]. This means 
>that we will also make new IXP assignments from an IP block different 
>than 185.1.0.0/16, when re-using the "IP space returned by IXPs".
>
>[1] https://www.ripe.net/publications/docs/ripe-649#61
>
>I hope this clarifies

Thanks for the clarification, Andrea. 
This would support the interpretation that any assignment out of
this pool is for IXP use only. 
-649 doesn't, though, explicitly require an IXP to return that
space except in the specific case of getting a larger assignment.

With all the horses biting each other over the empty cribbage
like we've seen recently, it may be a good idea to state this
requirement more explicitly in order to ring-fence the pool.

Full disclosure: I was tangentially involved in winding up an
IXP not long ago, and it was not clear to me until now that 
the assignment could not be transferred (even to another IXP).

rgds,
Sascha Luck