To amend the RIPE IPv6 address allocation policies regarding
the definition of the default size of End Site assignments, the
threshold value for End Site allocation efficiency, and the method
of calculation of the End Site allocation efficiency metric.
These measures, if undertaken generally by all RIRs, would increase
the anticipated useful lifetime of IPv6 to encompass a period
in excess of 100 years in which no further allocation policy changes
are anticipated.
To alter the existing policy regarding
LIR and ISP assignments to End Sites to allow the unit of assignment
to be an LIR or ISP decision.
To alter the definition of an
End Site for the purposes of the calculation of ISP or LIR End
Site allocation efficiency to a /56 size.
To amend the IPv6 threshold End
Site allocation utilisation level relating to assessment of
utilisation of End Site allocation efficiency to that matching
an HD Ratio value of 0.94.
Draft
Policy Text:
End Users:
End Users are assigned an End Site assignment from their LIR or
ISP. The size of the assignment is a local decision for the LIR
or ISP to
make, using a minimum value of a /64 (only one subnet is anticipated
for the End Site).
ISPs and LIRs:
ISPs and LIRs may chose whether to make changes to their procedures
for assigning address blocks to End Sites. The threshold End Site
allocation efficiency level is between 20% to 50% for most ISPs
and LIRs when based on a 0.94 HD Ratio. ISPs and LIRs will need
to operate address plans according to this target level of End
Site allocation efficiency.
RIPE NCC:
The RIPE NCC will need to amend its IPv6 criteria to reflect the
use of a /56 as the unit quantity in the calculation of the ISP
or LIR's allocation efficiency.
Rationale:
The current IPv6 Address Allocation and Assignment Policy (ripe-267)
suggests that most IPv6 subscribers should be assigned a /48 "in
the general case, except for very large subscribers". The
policy also asks the RIPE NCC to evaluate requests for additional
allocations "in units of /48 assignments."
This has the effect of encouraging the assignment of much more
address space than is ever likely to be needed by most subscribers.
As a consequence of that, LIRs will need far more address space,
depleting the available pool of addresses at an accelerated rate
and reducing the lifetime of the IPv6 protocol.
you are here: RIPE > Policy Development > Policy Proposals
