<html><head><meta http-equiv="content-type" content="text/html; charset=UTF-8"/></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">On Feb 26, 2025, at 4:12 PM, Scott Leibrand <scottleibrand@gmail.com> wrote:<div><blockquote type="cite"><div><div dir="ltr"><div dir="ltr">On Wed, Feb 26, 2025 at 3:51 PM David Conrad via ARIN-PPML <<a href="mailto:arin-ppml@arin.net">arin-ppml@arin.net</a>> wrote:</div><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Tyler,<br/>
<br/>
I’ve been reluctant to comment on this thread, but I’m increasingly confused...<br/>
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On Feb 26, 2025, at 2:47 PM, Tyler O'Meara via ARIN-PPML <<a href="mailto:arin-ppml@arin.net" target="_blank">arin-ppml@arin.net</a>> wrote:<br/>
> We should clarify that only the actual authoritative DNS servers qualify as CII;<br/>
<br/>
So, the load balancers, routers, switches, etc., that connect those servers don’t count? The remote database backends the authoritative servers depend on? The other backend and administrative systems, etc.?<br/></blockquote><div><br/></div><div>Why would those need publicly routable IPv4 addresses?</div></div></div></div></blockquote><br/></div><div>If you’re arguing that only public attachment points to the Internet need IPv4 addresses, you’ll get little argument from me, although those who are involved with actual critical infrastructure may have a different opinion. However, my impression was that people were throwing more into the “Critical Internet Infrastructure” bucket, e.g., ARIN and ICANN/PTI. My question was really the part that you removed:</div><div><br/></div><div>"<span style="font-family: Menlo-Regular; font-size: 10px;">The definition of “CII” used here appears to be arbitrary. Perhaps it might help if you define what you think is CII and why ARIN and ICANN/PTI would fall under that definition whereas Verisign wouldn’t?"</span></div><div><br/></div><div>Regards,</div><div>-drc</div><div><br/></div><br/></body></html>