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<p>Hola, </p>
<p>pero la opocisión es por las formas o por el contenido ? Es
decir, ¿le ves algun problema al uso de esa dirección en
particular?</p>
<p>Mirá que entiendo lo que dices es las formas, y no es un tema
menor.</p>
<p>s2</p>
<p>/Carlos</p>
<div class="moz-cite-prefix">On 30/10/25 5:00 PM, jordi.palet--- vía
LACNOG wrote:<br>
</div>
<blockquote type="cite"
cite="mid:40DF56ED-37F9-4C5C-923F-D16DEE6160CD@consulintel.es">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
Hola Hugo,
<div><br>
</div>
<div>Mala idea … ya lo hemos discutido en la lista de v6ops de
IETF, ademas, por lo visto IANA se esta saltando sus
atribuciones al pretender hacerlo sin contar con el IETF, pero
ademas no parece que sea el prefijo mas adecuado.</div>
<div><br>
</div>
<div>El procedimiento es presentar un I-D en v6ops, que v6ops lo
apruebe como WG item, pase el last call y lo apruebe el IESG.</div>
<div><br>
</div>
<div>Dicho de otro modo, IANA no puede definir esto sin contar con
el IETF, que es el “propietario” de las direcciones, protocolos,
etc., IANA solo es el gestor, pero no puede actuar por su
cuenta.</div>
<div><br>
</div>
<div>(que conste que no es que lo diga yo, es la discusión que
hemos tenido en IETF)</div>
<div><br>
</div>
<div>Así que las opiniones al respecto deberán ir a v6ops, pero
solo una vez que se presente el I-D (lo puede presentar alguien
de IANA, en eso no hay ninguna dificultad y creo que seria lo
lógico).</div>
<div><br>
</div>
<div>De hecho, ha entrado la duda de si esa asignación de IPv4 fue
correctamente realizada (y es la mas apropiada) o hay que
retrocederla también.</div>
<div><br>
</div>
<div>
<div>
<div>Saludos,<br>
Jordi<br>
<br>
@jordipalet<br>
<br>
</div>
</div>
<div><br>
<blockquote type="cite">
<div>El 30 oct 2025, a las 20:43, Hugo Salgado
<a class="moz-txt-link-rfc2396E" href="mailto:hsalgado@vulcano.cl"><hsalgado@vulcano.cl></a> escribió:</div>
<br class="Apple-interchange-newline">
<div>
<meta charset="UTF-8">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Hola
a todos.</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Cuando
aparece un nuevo TLD en la raíz del DNS, hay una etapa
especial</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">para
evitar que aquellos nombres que eventualmente pudieran
haberse</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">estado
usando en redes "privadas" tengan un aviso. Se le llama</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">"interrupción
controlada", donde el nuevo TLD debe responder en modo</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">"wildcard"
con una IP especial por algunos meses, para así dar una</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">oportunidad
a los administradores de esas redes para que cambien de</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">nombres,
antes que el TLD sea usado realmente con nombres de
verdad.</span><br
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<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Hasta
el momento era solo IPv4, usando la IP 127.0.53.53, que
está</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">dentro
del rango asignado para redes loopback (127.0.0.0/8). No
se</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">quiso
usar directamente la 127.0.0.1, porque hay mayor riesgo
que esa</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">también
se use para servicios locales.</span><br
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<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Ahora
ICANN hizo un estudio para agregar registros AAAA. El
problema</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">es
que en IPv6 solo la ::1/128 es loopback, así que hay que
decidir</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">cuál
usar. Hasta el momento gana la ::ffff:7f00:3535 (que
también se</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">puede
representar como ::ffff:127.0.53.53). Han hecho pruebas
en</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">distintos
OS y redes, y parece comportarse como loopback.</span><br
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<br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">La
idea es usar una IPv6 que no escape a la Internet
pública, y que</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">un
administrador pueda averiguar qué está pasando haciendo
una</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">búsqueda
por la IP en un buscador, y revisar logs para ver dónde
se</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">originan.</span><br
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<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Si
les parece una mala idea, acá está el lugar en el sitio
de ICANN</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">para
dar su feedback:</span><br
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;"><</span><a
href="https://www.icann.org/en/public-comment/proceeding/name-collision-ipv6-research-study-20-10-2025"
style="color: rgb(5, 99, 193); text-decoration: underline; font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.icann.org/en/public-comment/proceeding/name-collision-ipv6-research-study-20-10-2025</a><span
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<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">abierto
hasta el 22 de diciembre.</span><br
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<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Saludos,</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">Hugo</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">ps:
y a los que estén armando sus redes privadas, por favor
usen un</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">subdominio
de un nombre que tengan inscrito. Es la mejor opción. La</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">segunda
mejor opción es usar ".internal", que se va a reservar
para</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<span
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;">eso.</span><br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<div
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin: 0px;"><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif; color: rgb(127, 127, 127);"><b>De:<span
class="Apple-converted-space"> </span></b></span><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif;">Francisco
Arias <<a href="mailto:francisco.arias@icann.org"
style="color: rgb(5, 99, 193); text-decoration: underline;"
moz-do-not-send="true" class="moz-txt-link-freetext">francisco.arias@icann.org</a>><br>
</span></div>
<div
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin: 0px;"><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif; color: rgb(127, 127, 127);"><b>Asunto:<span
class="Apple-converted-space"> </span></b></span><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif;"><b>[dns-operations]
Name Collision IPv6 Research Study - Public Comment</b><br>
</span></div>
<div
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin: 0px;"><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif; color: rgb(127, 127, 127);"><b>Fecha:<span
class="Apple-converted-space"> </span></b></span><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif;">30
de octubre de 2025, 18:13:42 CET<br>
</span></div>
<div
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin: 0px;"><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif; color: rgb(127, 127, 127);"><b>Para:<span
class="Apple-converted-space"> </span></b></span><span
style="font-family: -webkit-system-font, "Helvetica Neue", Helvetica, sans-serif;">"<a
href="mailto:dns-operations@dns-oarc.net"
style="color: rgb(5, 99, 193); text-decoration: underline;"
moz-do-not-send="true" class="moz-txt-link-freetext">dns-operations@dns-oarc.net</a>"
<<a href="mailto:dns-operations@dns-oarc.net"
style="color: rgb(5, 99, 193); text-decoration: underline;"
moz-do-not-send="true" class="moz-txt-link-freetext">dns-operations@dns-oarc.net</a>><br>
</span></div>
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br
style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<div class="WordSection1"
style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;">Dear
colleagues,</div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;">ICANN
has opened a public comment period on a research study
titled "Controlled Interruption IPv6 Research Study".
The study focuses on extending ICANN's "controlled
interruption" mechanism, previously implemented using
only the IPv4 address 127.0.53.53 into the IPv6 realm,
given the growing adoption of IPv6 (> 40 % of
hosts). The public comment period runs from 20 October
2025 to 22 December 2025:<span
class="Apple-converted-space"> </span><a
href="https://www.icann.org/en/public-comment/proceeding/name-collision-ipv6-research-study-20-10-2025"
target="_blank"
style="color: rgb(5, 99, 193); text-decoration: underline;"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.icann.org/en/public-comment/proceeding/name-collision-ipv6-research-study-20-10-2025</a></div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;">Controlled
interruption is a phase in the establishment of a new
generic top-level domain (gTLD) that is designed to
reduce the risk of name collision. During controlled
interruption, certain DNS resource records, designed
to interrupt resolution processes, are temporarily
published at and below the gTLD name. The content of
these DNS records is intended to minimize any harm
that arises from such interruption.</div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;">This
study produces an initial list of candidate prefixes,
followed by technical tests of multiple applications
on popular end-user operating systems. The aim was to
identify candidate addresses where DNS lookups
returning that address did not result in any
unintended external network traffic. A preferred
candidate that met these criteria was identified:
ffff:127.0.53.53, which is the IPV6 mapping of the
original IPv4 controlled interruption address.</div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;">This
mailing list is being alerted to request input on this
topic. While there will undoubtedly be valuable
discussions on this list around various aspects of
this proposal, ICANN requests that specific feedback
(from individuals or the group as a whole) is
ultimately provided directly into the public comment
website.</div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div>
<div>
<div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><span>-- <o:p></o:p></span></div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><span>Francisco.<o:p></o:p></span></div>
</div>
</div>
<div
style="margin: 0in; font-size: 12pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div>
</div>
<span
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mailing list</span><br
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<a href="mailto:dns-operations@lists.dns-oarc.net"
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moz-do-not-send="true" class="moz-txt-link-freetext">https://lists.dns-oarc.net/mailman/listinfo/dns-operations</a><br
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<pre wrap="" class="moz-quote-pre">_______________________________________________
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