<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;"><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Nov 7, 2023, at 23:09, Bryan Fields <Bryan@bryanfields.net> wrote:</div><br class="Apple-interchange-newline"><div><div>On 11/8/23 1:29 AM, Owen DeLong via NANOG wrote:<br><blockquote type="cite">https://dnsviz.net/d/10.159.192.in-addr.arpa/dnssec/<br>Seems to report a bunch of errors in the DS records for 192.in-addr.arpa held in the in-addr.arpa zone.<br>I figured I’d wait a few days and try again the first few times I encountered this, but it’s persisted for more than two weeks now.<br></blockquote><br>Could these be related to the fact that dnsvis.net is trying to reach these servers via IPv6 and I think they use Hurricane for transit. Since HE and Cogent is a major gap, this causes them to time out trying to reach the C root server over IPv6.<br><br></div></div></blockquote><div><br></div>It could well be… I haven’t tried to research the hosting of the <a href="http://dnsviz.net">dnsviz.net</a> web server I’m connecting to and I don’t know anything about how their backend is structured (whether it’s on the same server or somewhere else, for example).</div><div><br></div><div>However, <a href="http://c.root-servers.net">c.root-servers.net</a> is not the problem being reported. The servers that provide the zone in question are (reportedly):</div><div><br></div><div><p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS a.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS b.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS c.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS d.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS e.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS f.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS g.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS h.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS i.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS k.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS l.ns.arpa.</span></p>
<p style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 19px; line-height: normal; font-family: Monaco; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(47, 255, 18); background-color: rgb(0, 0, 0);"><span style="font-variant-ligatures: no-common-ligatures">arpa. 84508 IN NS m.ns.arpa.</span></p><div><span style="font-variant-ligatures: no-common-ligatures"><br></span></div></div><div>c.ns.arpa does share an IPv6 address with <a href="http://c.root-servers.net">c.root-servers.net</a>, however, so yes, the Cogent peering issue could be part of it.</div><div><br></div><div>Seems irresponsible to me that a root-server (or other critical DNS provider) would engage in a peering war to the exclusion of workable DNS.</div><div><br></div><div>Owen</div><div><br></div></body></html>