[squid-users] Fw: Squid 32-bit (2.7.2) much faster than

Amos Jeffries squid3 at treenet.co.nz
Sat Dec 12 04:03:25 UTC 2015

On 12/12/2015 7:42 a.m., Patrick Flaherty wrote:
> Hello,
> I added the following line to my squid.conf and now Squid 3.5.11 is as fast as 2.7.2 and feels like direct internet access.
> dns_v4_first on 

That plus the huge difference in speed tells me that you have very
broken IPv6 connectivity. Most likely ICMP is not working on your
network, or one of your upstreams.

ICMP is not an optional protocol. It is mandatory for efficient
congestion control, even in IPv4 networks.


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