<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false"><div><div class="ydp58adc30amsg-body ydp58adc30aP_wpofO ydp58adc30aiy_A ydp58adc30amq_AS" data-test-id="message-view-body-content"><div class="ydp58adc30ajb_0 ydp58adc30aX_6MGW ydp58adc30aN_6Fd5"><div><div id="ydp58adc30ayiv3924886932"><div><div class="ydp58adc30ayiv3924886932yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr"><div><div dir="ltr"><p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span lang="EN-US">Dear All,</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span lang="EN-US">I am using
Squid version 3.5.2 on Centos  7 64 bit and its working fine with no issue
but recently got a complain from one user saying that the below site Is not
opening..  just says page cannot be displayed</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:blue;"><a href="https://my.esri.com" style="color:blue;" rel="nofollow" target="_blank">https://my.esri.com</a></span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:blue;"> </span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:black;" lang="EN-US">but if I use a machine without squid its
working fine</span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:black;" lang="EN-US"> </span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:black;" lang="EN-US">the access logs is showing me as below</span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:black;" lang="EN-US"> </span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span><span style="font-family:Helvetica, sans-serif;color:black;" lang="EN-US"> </span></span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">1575869460.673  
6034 172.16.2.175 TCP_TUNNEL/200 0 CONNECT <a href="http://my.esri.com:443" rel="nofollow" target="_blank">my.esri.com:443</a> -
HIER_DIRECT/<a href="http://34.210.189.55" rel="nofollow" target="_blank">34.210.189.55</a> -</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">1575869461.235   
559 172.16.2.175 TCP_TUNNEL/200 0 CONNECT <a href="http://my.esri.com:443" rel="nofollow" target="_blank">my.esri.com:443</a> - HIER_DIRECT/<a href="http://34.210.189.55" rel="nofollow" target="_blank">34.210.189.55</a>
-</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">1575869461.801   
562 172.16.2.175 TCP_TUNNEL/200 0 CONNECT <a href="http://my.esri.com:443" rel="nofollow" target="_blank">my.esri.com:443</a> -
HIER_DIRECT/<a href="http://34.210.189.55" rel="nofollow" target="_blank">34.210.189.55</a> -</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">1575869462.096   
291 172.16.2.175 TCP_TUNNEL/200 0 CONNECT <a href="http://my.esri.com:443" rel="nofollow" target="_blank">my.esri.com:443</a> -
HIER_DIRECT/<a href="http://34.210.189.55" rel="nofollow" target="_blank">34.210.189.55</a> –</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">I
tried to google around and found that the the ip4 prefrence has to enabled for
DNS so I did the below in squid config</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">dns_v4_first
on</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">but
no luck</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">appreciate
your help and advice</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">thanks
and regards</span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US"> </span></p>

<p class="ydp58adc30ayiv3924886932ydp848e5ff4MsoNormal" style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri, sans-serif;"><span style="color:black;" lang="EN-US">simon</span></p></div></div><div><br><br></div></div></div></div></div></div></div></div></div><div><br></div></div></div></body></html>