squid and apt

In the past few months apt-get update started failing when using a squid3 web cache.

It woudl give errors like these…

• 404 Not Found [IP: 149.20.20.135 80]
• The HTTP server sent an invalid reply header [IP: 130.89.149.227 80]
• Failed to fetch .../Packages 404 Not Found [IP: 149.20.20.135 80]
• Failed to fetch .../Sources 404 Not Found [IP: 149.20.20.135 80]
• etc

I initally found some missleading information that would suggest this bug was fixed in future releases of squid3; that was not the case.

I finally found a solution to the issue in this blog post.

After adding the following line to my /etc/squid3/squid.conf, apt went back to working.

refresh_all_ims on