[squid-users] Parse DNS for IPv4 and IPv6

Jonathan Lee jonathanlee571 at gmail.com
Wed Jul 31 20:17:57 UTC 2024


I forgot to mention this is over a he tunnel broker gif interface with IPv4 only isp
Sent from my iPhone

> On Jul 31, 2024, at 12:03, Jonathan Lee <jonathanlee571 at gmail.com> wrote:
> 
> I show HTTP/1.1 409 conflict when it try to reply from the firewall back to the client.
> 
> I do not know if you need a pcap file
> 
> <Capture.PNG>
> <packetcapture-mvneta1.4084-20240731114904.pcap>
> 
> 
>> On Jul 31, 2024, at 03:35, Matus UHLAR - fantomas <uhlar at fantomas.sk> wrote:
>> 
>>> On 30.07.24 12:55, Jonathan Lee wrote:
>>> Hello fellow squid users can you please help?
>> 
>>> I have noticed that I get 409 errors with IPv6 only clients this leads me to believe that it’s DNS related.
>> 
>> why do you think that?
>> 
>>> My firewall has both IPV4 and IPV6 DNS.  I wonder if when an IPV6 only client is trying to access the proxy it defaults to IPv4 dns.
>> 
>> Sice, the connection between client and squid is separate from connection between squid and server, it should be perfectly okay to have ipv6 on one and ipv4 on another.
>> 
>>> How can one manually set the system to utilize specified DNS for ACL use within subnets?  The system works as long as clients are double stacked.
>> 
>> Can we see example of those errors in log files?
>> 
>> --
>> Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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