From fgont en si6networks.com  Sat Aug  1 05:26:12 2026
From: fgont en si6networks.com (Fernando Gont)
Date: Sat, 1 Aug 2026 05:26:12 -0300
Subject: [lacnog] The mistakes and missed opportunities in the design of IPv6
Message-ID: <bfdeea76-b5c8-404b-bdcb-7f47ecaf3f9c@si6networks.com>

Estimados,

Dado que en otro thread hubieron discusiones sobre cuestiones de diseno 
de IPv6, les comparto este articulo y slides (de Ole Troan):

* 
https://medium.com/@oletroan/the-mistakes-and-missed-opportunities-in-ipv6-d88ceb3d7feb

* 
https://grnog.indico.nogalliance.org/event/11/contributions/118/attachments/97/166/grnog18-ipv6-mistakes.pdf


Y como tambien hubo una discusion sobre dudas sobre IPv6, y reutilizar 
el conocimiento de IPv4, les comparto estos dos (algo mas extensos), mios:

* 
https://www.internetsociety.org/wp-content/uploads/2019/03/deploy360-ipv6-security-v1.0.pdf

* 
https://www.internetsociety.org/wp-content/uploads/2019/02/Deploy360-IPv6-Security-FAQ.pdf

Buen finde,
-- 
Fernando Gont
SI6 Networks
e-mail: fgont en si6networks.com
PGP Fingerprint: F242 FF0E A804 AF81 EB10 2F07 7CA1 321D 663B B494


From weeklyipv6report en gmail.com  Thu Aug  6 11:50:40 2026
From: weeklyipv6report en gmail.com (weeklyipv6report en gmail.com)
Date: Thu, 06 Aug 2026 07:50:40 -0700 (PDT)
Subject: [lacnog] Weekly Global IPv6 Routing Table Summary
Message-ID: <6a749f40.0c0d0188.b099d.8acd@mx.google.com>


This is an automated weekly mailing describing the state of the Global
IPv6 Routing Table as seen from route-views.routeviews.org

The posting is sent to VENOG, APOPS, PACNOG and LACNOG.
If you wish to be added please send an email to: info.venog en gmail.com

Global Analysis Summary
--------------------------------------------------------------------------------------

  BGP routing table entries examined: 254525
    Prefix with the most prepends: {'PREFIX': '2803:6850:1::/48', 'Count': 29, 'AS': '273113'}
    Unidentified prefixes: 0
    Number of AS_SET found in the Routing Table: 0
    Longest Global AS PATH: 33
    Prefixes identified as IANA: 9
    Global Average Prefix Length: 42.96
    Number of /48s globally: 116643
    Prefixes after maximum aggregation (per Origin AS): 141870
    IPv6 deaggregation factor: 1.8

    Global - Prefixes with a valid RPKI status: 205193
    Global - Prefixes with an invalid RPKI status: 1298
    Global - ROA?uncovered prefixes: 48034

  Total ASes present in the Internet Routing Table: 36872
    Global - Average number of prefixes according to the number of ASes: 6.9

    Number of 32-bit ASes globally: 23924
    Number of 16-bit ASes globally: 12948

    Number of ASes that are only origin: 33613
      Number of 16-bit ASes that are only origin: 11022
      Number of 32-bit ASes that are only origin: 22591

    Number of ASes that are only transit: 201
      Number of 16-bit ASes that are only transit: 130
      Number of 32-bit ASes that are only transit: 71

    Number of Transit ASes that also announce prefixes: 3259

    Number of bogon 16-bit ASNs visible in the Routing Table: 0

    Number of bogon 32-bit ASNs visible in the Routing Table: 0

    Unidentified ASes: 0

APNIC Region Analysis Summary
--------------------------------------------------------------------------------------

  APNIC IPv6 prefixes: 2001:200::/23 2001:c00::/23 2001:e00::/23 2001:4400::/23 2001:8000::/19 2001:a000::/20 2001:b000::/20 2400::/12 2410::/12

  Number of prefixes analyzed in APNIC: 87447
    Average number of prefixes according to the number of ASes in APNIC: 9.0
    Average Prefix Length in APNIC: 43.52
    Number of /48s in APNIC: 34683
    Longest PATH in APNIC: 25
    Prefix with most prepends in APNIC {'PREFIX': '2001:DF4:5FC0::/48', 'Count': 20, 'AS': '138804'}

    Prefixes after maximum aggregation (per Origin AS): 38726
    IPv6 deaggregation factor: 2.2
    
    APNIC - Prefixes with a valid RPKI status: 79087
    APNIC - Prefixes with an invalid RPKI status: 870
    APNIC - ROA?uncovered prefixes: 7490

  Number of ASes in APNIC: 9717
    Number of 32-bit ASes in APNIC: 7962
    Number of 16-bit ASes that are only origin in APNIC: 1423
    Number of 32-bit ASes that are only origin in APNIC: 7745
    Number of 16-bit ASes that are only transit in APNIC: 36
    Number of 32-bit ASes that are only transit in APNIC: 22
    Number of Transit ASes that also announce prefixes in APNIC: 548

ARIN Region Analysis Summary
--------------------------------------------------------------------------------------

  ARIN IPv6 prefixes: 2001:400::/23 2001:1800::/23 2001:4800::/23 2600::/12 2610::/23 2620::/23 2630::/12

  Number of prefixes analyzed in ARIN: 42709
    Average number of prefixes according to the number of ASes in ARIN: 8.04
    Average Prefix Length in ARIN: 44.52
    Number of /48s in ARIN: 24220
    Longest AS PATH in ARIN: 28
    Prefix with most prepends in ARIN {'PREFIX': '2604:5500::/42', 'Count': 25, 'AS': '19165'}

    Prefixes after maximum aggregation (per Origin AS): 35347
    IPv6 deaggregation factor: 1.6

    ARIN - Prefixes with a valid RPKI status: 32469
    ARIN - Prefixes with an invalid RPKI status: 57
    ARIN - ROA?uncovered prefixes: 10183

  Number of ASes in ARIN: 5313
    Number of 32-bit ASes in ARIN: 1603
    Number of 16-bit ASes that are only origin in ARIN: 3309
    Number of 32-bit ASes that are only origin in ARIN: 1556
    Number of 16-bit ASes that are only transit in ARIN: 30
    Number of 32-bit ASes that are only transit in ARIN: 6
    Number of Transit ASes that also announce prefixes in ARIN: 445

LACNIC Region Analysis Summary
--------------------------------------------------------------------------------------

  LACNIC IPv6 prefixes: 2001:1200::/23 2800::/12

  Number of prefixes analyzed in LACNIC: 54932
    Average number of prefixes according to the number of ASes in LACNIC: 5.74
    Average Prefix Length in LACNIC: 41.1
    Number of /48s in LACNIC: 20923
    Longest AS PATH in LACNIC: 33
    Prefix with most prepends in LACNIC {'PREFIX': '2803:6850:1::/48', 'Count': 29, 'AS': '273113'}

    Prefixes after maximum aggregation (per Origin AS): 32585
    IPv6 deaggregation factor: 1.61

    LACNIC - Prefixes with a valid RPKI status: 34524
    LACNIC - Prefixes with an invalid RPKI status: 111
    LACNIC - ROA?uncovered prefixes: 20297

  Number of ASes in LACNIC: 9576
    Number of 32-bit ASes in LACNIC: 8144
    Number of 16-bit ASes that are only origin in LACNIC: 1106
    Number of 32-bit ASes that are only origin in LACNIC: 7320
    Number of 16-bit ASes that are only transit in LACNIC: 5
    Number of 32-bit ASes that are only transit in LACNIC: 15
    Number of Transit ASes that also announce prefixes in LACNIC: 1146

AFRINIC Region Analysis Summary
--------------------------------------------------------------------------------------
  
  AFRINIC IPv6 prefixes: 2001:4200::/23 2c00::/12

  Number of prefixes analyzed in AFRINIC: 4309
    Average number of prefixes according to the number of ASes in AFRINIC: 6.44
    Average Prefix Length in AFRINIC: 43.65
    Number of /48s in AFRINIC: 2412
    Longest AS PATH in AFRINIC: 16
    Prefix with most prepends in AFRINIC {'PREFIX': '2001:43FD:F000::/48', 'Count': 12, 'AS': '37440'}

    Prefixes after maximum aggregation (per Origin AS): 1701
    IPv6 deaggregation factor: 2.39

    AFRINIC - Prefixes with a valid RPKI status: 3000
    AFRINIC - Prefixes with an invalid RPKI status: 0
    AFRINIC - ROA?uncovered prefixes: 1309

  Number of ASes in AFRINIC: 669
    Number of 32-bit ASes in AFRINIC: 393
    Number of 16-bit ASes that are only origin in AFRINIC: 224
    Number of 32-bit ASes that are only origin in AFRINIC: 378
    Number of 16-bit ASes that are only transit in AFRINIC: 3
    Number of 32-bit ASes that are only transit in AFRINIC: 2
    Number of Transit ASes that also announce prefixes in AFRINIC: 67

RIPE Region Analysis Summary
---------------------------------------------------------------------------------

  RIPE IPv6 prefixes: 2001:600::/23 2001:800::/22 2001:1400::/22 2001:1a00::/23 2001:1c00::/22 2001:2000::/19 2001:4000::/23 2001:4600::/23 2001:4a00::/23 2001:4c00::/23 2001:5000::/20 2003::/18 2a00::/12 2a10::/12

  Number of prefixes analyzed in RIPE: 65119
    Average number of prefixes according to the number of ASes in RIPE: 5.62
    Average Prefix Length in RIPE: 42.7
    Number of /48s in RIPE: 34399
    Longest AS PATH in RIPE: 30
    Prefix with most prepends in RIPE {'PREFIX': '2A06:9801:111::/48', 'Count': 20, 'AS': '204261'}

    Prefixes after maximum aggregation (per Origin AS): 34148
    IPv6 deaggregation factor: 1.67

    RIPE - Prefixes with a valid RPKI status: 56112
    RIPE - Prefixes with an invalid RPKI status: 260
    RIPE - ROA?uncovered prefixes: 8747

  Number of ASes in RIPE: 11597
    Number of 32-bit ASes in RIPE: 5815
    Number of 16-bit ASes that are only origin in RIPE: 4956
    Number of 32-bit ASes that are only origin in RIPE: 5585
    Number of 16-bit ASes that are only transit in RIPE: 55
    Number of 32-bit ASes that are only transit in RIPE: 23
    Number of Transit ASes that also announce prefixes in RIPE: 1053
    

End of report
Based on Philip Smith's IPv4 Weekly Report
Hosted by LACNIC


