<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, May 26, 2016 at 8:04 AM, Amos Jeffries <span dir="ltr"><<a href="mailto:squid3@treenet.co.nz" target="_blank">squid3@treenet.co.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 24/05/2016 7:52 p.m., Tomas Mozes wrote:<br>
> Hello,<br>
> on two different squid servers I've observed a crash of pinger. First it<br>
> appeared on version 3.5.15 and later on version 3.5.17.<br>
><br>
> Cache.log contains these lines:<br>
><br>
> (pinger): Address.cc:671: void Ip::Address::getAddrInfo(addrinfo*&, int)<br>
> const: Assertion `false' failed.<br>
> 2016/05/14 21:55:25 kid1| Bad opcode: 112 from<br>
> [6661:6c73:6522:2061:7420:6c69:6e65:2036]<br>
> 2016/05/14 21:59:13 kid1| recv: (111) Connection refused<br>
> 2016/05/14 21:59:13 kid1| Closing Pinger socket on FD 17<br>
><br>
> On both servers, that IPv6 address was the same -<br>
> 6661:6c73:6522:2061:7420:6c69:6e65:2036<br>
><br>
<br>
</span>That is the hexadecimal representation of the error:<br>
false" at line 6<br>
<br>
Which means that your kernel is producing garbage when asked to resolve<br>
an IPv6 address or respond to an ICMPv6 packet.<br></blockquote><div><br>Cannot we prevent Squid from crashing in these cases?<br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<span class=""><br>
<br>
> A quick google search for that showed problems with Squid from the past:<br>
> <a href="http://www.squid-cache.org/mail-archive/squid-users/201301/0251.html" rel="noreferrer" target="_blank">http://www.squid-cache.org/mail-archive/squid-users/201301/0251.html</a><br>
><br>
> The strange thing is that I have IPv6 disabled in the system (not even as a<br>
> module in the Linux kernel) and Squid was compiled without ipv6 support.<br>
><br>
<br>
</span>Support for IPv6 has been mandatory for all IP network connected devices<br>
since 2012.<br>
<br>
"Disabling" IPv6 in Squid simply means it will not attempt to use IPv6<br>
for HTTP connections. It must still be able to identify IPv6 addresses.<br>
Which requires kernel support for IPv6.<br>
<br>
If you don't want IPv6 to take place "the right way" to do it is to<br>
configure your network interfaces not to have IPv6 address assignments<br>
and your machines firewall to block IPv6 traffic.<br>
<br>
Amos<br>
<br>
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</blockquote></div><br></div></div>