Re: the race to the bottom problem

[Gyan Mishra <[e-mail]>]

Another point as far as IPv6 exhaustion possibilities is that IANA could
release additional blocks per RFC 3587.

https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml

Current GUA:
2000::/3 Global Unicast [RFC3513 <https://www.iana.org/go/rfc3513>][RFC4291
<https://www.iana.org/go/rfc4291>] The IPv6 Unicast space encompasses the
entire IPv6 address range with the exception of ff00::/8, per [RFC4291
<https://www.iana.org/go/rfc4291>]. IANA unicast address assignments are
currently limited to the IPv6 unicast address range of 2000::/3. IANA
assignments from this block are registered in [IANA registry
*ipv6-unicast-address-assignments*
<https://www.iana.org/assignments/ipv6-unicast-address-assignments>]. [7
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note7>]
[8
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note8>]
[9
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note9>]
[10
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note10>]
[11
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note11>]
[12
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note12>]
[13
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note13>]
[14
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note14>]
[15
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note15>
]


2^125 =

42,535,295,865,117,307,932,921,825,928,971,026,432


Other IETF reserved allocations that could be released in the future.
0000::/8 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>] [1
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note1>]
[2
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note2>]
[3
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note3>]
[4
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note4>]
[5
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note5>]
[6
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note6>
]
0100::/8 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>] 0100::/64 reserved for
Discard-Only Address Block [RFC6666 <https://www.iana.org/go/rfc6666>].
Complete registration details are found in [IANA registry
*iana-ipv6-special-registry*
<https://www.iana.org/assignments/iana-ipv6-special-registry>].
0200::/7 Reserved by IETF [RFC4048 <https://www.iana.org/go/rfc4048>]
Deprecated
as of December 2004 [RFC4048 <https://www.iana.org/go/rfc4048>]. Formerly
an OSI NSAP-mapped prefix set [RFC4548 <https://www.iana.org/go/rfc4548>].
0400::/6 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
0800::/5 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
1000::/4 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
2000::/3 Global Unicast [RFC3513 <https://www.iana.org/go/rfc3513>][RFC4291
<https://www.iana.org/go/rfc4291>] The IPv6 Unicast space encompasses the
entire IPv6 address range with the exception of ff00::/8, per [RFC4291
<https://www.iana.org/go/rfc4291>]. IANA unicast address assignments are
currently limited to the IPv6 unicast address range of 2000::/3. IANA
assignments from this block are registered in [IANA registry
*ipv6-unicast-address-assignments*
<https://www.iana.org/assignments/ipv6-unicast-address-assignments>]. [7
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note7>]
[8
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note8>]
[9
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note9>]
[10
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note10>]
[11
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note11>]
[12
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note12>]
[13
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note13>]
[14
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note14>]
[15
<https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml#note15>
]
4000::/3 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
6000::/3 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
8000::/3 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
a000::/3 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
c000::/3 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
e000::/4 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
f000::/5 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]
f800::/6 Reserved by IETF [RFC3513 <https://www.iana.org/go/rfc3513>][
RFC4291 <https://www.iana.org/go/rfc4291>]



https://tools.ietf.org/html/rfc3587

See section 2 3rd paragraph.

2 TLA/NLA Made Historic


   RFC 2374 <https://tools.ietf.org/html/rfc2374> was the definition
of addre.  sses for Format Prefix 001
   (2000::/3) which is formally made historic by this document.  Even
   though currently only 2000::/3 is being delegated by the IANA,
   implementations should not make any assumptions about 2000::/3 being
   special.  In the future, the IANA might be directed to delegate
   currently unassigned portions of the IPv6 address space for the
   purpose of Global Unicast as well.







On Sun, Nov 8, 2020 at 7:33 PM Mark Andrews <[e-mail]> wrote:

>
>
> > On 8 Nov 2020, at 10:24, Nick Hilliard <[e-mail]> wrote:
> >
> > Ted Lemon wrote on 07/11/2020 23:16:
> >> Read the whole thread, please, Nick.
> >
> > this is the problem: I did read it, just like I've read through all the
> other threads on this topic over the last several years. There was a repeat
> of the usual speculation, generalisation and echo-chamber mechanics which
> have characterised this discussion at the ietf since more-or-less forever.
> >
> > You said: "we’ve already seen clear pressure to race to the bottom".
> >
> > So I politely ask you again: please provide citations to data.  Then we
> can have a discussion.
>
> Telcos only supplying /64 despite 3GPP supporting shorter than /64.  Every
> Telco that only supplies /64 has raced to the bottom.  There was reasons
> for this initially.  Some devices did not work correctly with short than
> /64 because their developers fail to properly test them before releasing
> them.  Its now a decade later and many of those Telcos are still doing /64.
>
> DHCP-PD supports STATIC leases.  Whether you get a static of dynamic lease
> depends on the functionality the DHCP server vendor built in and how the
> server is configured.
>
> > Nick
> >
> > --------------------------------------------------------------------
> > IETF IPv6 working group mailing list
> > [e-mail]
> > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> > --------------------------------------------------------------------
>
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: [phone]              INTERNET: [e-mail]
>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> [e-mail]
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------
>
-- 

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD