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

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