<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 8, 2022 at 4:05 PM Mike Hammett <<a href="mailto:nanog@ics-il.net">nanog@ics-il.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0)"><font face="arial, helvetica, sans-serif"><span style="font-size:10pt">Some people need a clue by four and I'm looking to build my collection of them.</span></font><div style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;font-size:10pt"><br></div><div style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;font-size:10pt"><br></div><div><font face="arial, helvetica, sans-serif"><span style="font-size:10pt">Someone on Outages was nice enough to send this about someone else's thread:</span></font><br><font face="arial, helvetica, sans-serif"><span style="font-size:13.3333px"><a href="https://peering.google.com/#/learn-more/faq" target="_blank">https://peering.google.com/#/learn-more/faq</a></span></font></div><div><font face="arial, helvetica, sans-serif"><span style="font-size:13.3333px"><br></span></font></div><div><font face="arial, helvetica, sans-serif"><span style="font-size:13.3333px">"Google services, including Google Public DNS, are not designed as ICMP network testing services"</span></font></div><div><br></div></div></div></blockquote><div><br></div><div>you know what you COULD do though... probe it with DNS requests, and then you know, test the service being offered, and still know that 'the internet is not on fire'.</div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0)"><div><div style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;font-size:10pt"><span name="x"></span><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">-----</span><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Mike Hammett</span><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://www.ics-il.com/" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank">Intelligent Computing Solutions</a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="https://www.facebook.com/ICSIL" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://plus.google.com/+IntelligentComputingSolutionsDeKalb" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://www.linkedin.com/company/intelligent-computing-solutions" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://twitter.com/ICSIL" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://www.midwest-ix.com/" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank">Midwest Internet Exchange</a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="https://www.facebook.com/mdwestix" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://www.linkedin.com/company/midwest-internet-exchange" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://twitter.com/mdwestix" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://www.thebrotherswisp.com/" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank">The Brothers WISP</a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="https://www.facebook.com/thebrotherswisp" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><span name="x"></span><br></div><hr id="gmail-m_-7696015084433250739zwchr" style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;font-size:10pt"><div style="color:rgb(0,0,0);font-family:Helvetica,Arial,sans-serif;font-size:12pt;font-weight:normal;font-style:normal;text-decoration:none"><b>From: </b>"Tom Beecher" <<a href="mailto:beecher@beecher.cc" target="_blank">beecher@beecher.cc</a>><br><b>To: </b>"Mike Hammett" <<a href="mailto:nanog@ics-il.net" target="_blank">nanog@ics-il.net</a>><br><b>Cc: </b>"NANOG" <<a href="mailto:nanog@nanog.org" target="_blank">nanog@nanog.org</a>><br><b>Sent: </b>Tuesday, February 8, 2022 3:01:27 PM<br><b>Subject: </b>Re: Authoritative Resources for Public DNS Pinging<br><br><div dir="ltr"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;font-size:13.3333px">Are there any authoritative resources from said organizations saying you shouldn't use their servers for your persistent ping destinations?</span></blockquote><div><br></div><div>I'm not sure that an ' <span style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;font-size:13.3333px">authoritative resource ' is really needed. It should be generally understood at this point in the internet's life that networks will block / restrict some or all ICMP traffic as they need to. </span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 8, 2022 at 12:58 PM Mike Hammett <<a href="mailto:nanog@ics-il.net" target="_blank">nanog@ics-il.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:rgb(0,0,0)">Yes, pinging public DNS servers is bad.<div><br></div><div>Googling didn't help me find anything.</div><div><br></div><div>Are there any authoritative resources from said organizations saying you shouldn't use their servers for your persistent ping destinations?<br><br><div><span></span><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">-----</span><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline">Mike Hammett</span><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://www.ics-il.com/" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank">Intelligent Computing Solutions</a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="https://www.facebook.com/ICSIL" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://plus.google.com/+IntelligentComputingSolutionsDeKalb" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://www.linkedin.com/company/intelligent-computing-solutions" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://twitter.com/ICSIL" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://www.midwest-ix.com/" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank">Midwest Internet Exchange</a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="https://www.facebook.com/mdwestix" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://www.linkedin.com/company/midwest-internet-exchange" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://twitter.com/mdwestix" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="http://www.thebrotherswisp.com/" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank">The Brothers WISP</a><br style="color:rgb(0,0,0);font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><a href="https://www.facebook.com/thebrotherswisp" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><a href="https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg" style="font-family:"times new roman";font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" rel="nofollow noopener noreferrer" target="_blank"><img style="border: 0pt none;"></a><span></span><br></div></div></div></div></blockquote></div>
</div><br></div></div></div></blockquote></div></div>