Re: IPv6 PI block is announced - update your filters 2620:0000::/23

From: Bjoern A. Zeeb (no email)
Date: Fri Sep 15 2006 - 17:39:20 EDT

  • Next message: Peter Corlett: "Re: IPv6 PI block is announced - update your filters 2620:0000::/23"

    On Fri, 15 Sep 2006, Gert Doering wrote:

    Hi,

    > On Thu, Sep 14, 2006 at 12:05:16AM +0200, Jeroen Massar wrote:
    >> It's update your IPv6 filters time:
    >>
    >> http://www.arin.net/reference/ip_blocks.html
    >>
    >> 8<-----------------------------------------
    >> IPv6 Assignment Blocks CIDR Block
    >> 2620:0000:/23
    >> ----------------------------------------->8
    >> Expect blocks in between /40 and /48 there.
    >
    > Filter recommendation document updated.

    Could you also add blocks like 2800::/23 from LACNIC issued
    Nov 2005 by IANA?

    > Does the policy really permit /40.../47 assignments?

    The only thing I found so far is [1] which really only
    defines the <=48 end. It's talking about _at least_ a /44
    reserved for future growth and it says "When possible, [subsequent]
    assignments will be made from an adjacent address block.".

    Considering what we see with v4 PI (direct assignments) today
    and had seen with /8 PA and an undefined ("open") other end in
    ARIN policy I wouldn't trust any >=40 rule being the maximum
    for this block.

    I have so far decided to use (also see [2]):

    ! + ARIN PI (chose whatever one you think is worse)
    !ipv6 prefix-list ipv6-ebgp-strict seq 135 deny 2620::/23 le 128
    ipv6 prefix-list ipv6-ebgp-strict seq 135 permit 2620::/23 ge 32 le 48

    Happy weekend.
    /bz

    References:

    [1] http://www.arin.net/policy/nrpm.html#six582
             6.5.8. Direct assignments from ARIN to end-user organizations
             6.5.8.2. Initial assignment size
             6.5.8.3. Subsequent assignment size

    [2] http://sources.zabbadoz.net/ipv6/v6-prefix-filter-20060913-public.cfg

    -- 
    Bjoern A. Zeeb				bzeeb at Zabbadoz dot NeT
    

  • Next message: Peter Corlett: "Re: IPv6 PI block is announced - update your filters 2620:0000::/23"





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