Debian 8 "Jessie". CLI-only home-use server.
"apt-get upgrade" always fails with "E: Failed to fetch ... Connection failed ..." errors.
"apt-get update" appears to always succeed.
Problem has been occurring for days. Upgrades were previously succeeding without issue. Recently re-sized the /home and /var drive partitions but cannot think of any other major changes.
Have attempted to include several mirrors in /etc/apt/sources.list but none succeed. My sources.list file is:
deb http://mirror.it.ubc.ca/debian jessie main
deb http://mirror.its.dal.ca/debian jessie main
deb http://debian.mirror.iweb.ca/debian jessie main
deb http://debian.mirror.rafal.ca/debian jessie main
deb http://ftp3.nrc.ca/debian jessie main
deb-src http://mirror.it.ubc.ca/debian jessie main
deb-src http://mirror.its.dal.ca/debian jessie main
deb-src http://debian.mirror.iweb.ca/debian jessie main
deb-src http://debian.mirror.rafal.ca/debian jessie main
deb-src http://ftp3.nrc.ca/debian jessie main
deb http://mirror.it.ubc.ca/debian jessie-updates main
deb http://mirror.its.dal.ca/debian jessie-updates main
deb http://debian.mirror.iweb.ca/debian jessie-updates main
deb http://debian.mirror.rafal.ca/debian jessie-updates main
deb http://ftp3.nrc.ca/debian jessie-updates main
deb-src http://mirror.it.ubc.ca/debian jessie-updates main
deb-src http://mirror.its.dal.ca/debian jessie-updates main
deb-src http://debian.mirror.iweb.ca/debian jessie-updates main
deb-src http://debian.mirror.rafal.ca/debian jessie-updates main
deb-src http://ftp3.nrc.ca/debian jessie-updates main
Example of errors encountered:
Err http://mirror.its.dal.ca/debian/ jessie/main base-files amd64 8+deb8u2
Connection failed [IP: 192.75.96.254 80]
E: Failed to fetch http://ftp3.nrc.ca/debian/pool/main/b/base-files/base-files_8+deb8u2_amd64.deb Connection failed [IP: 132.246.2.23 80]
No proxy is defined in /etc/apt/apt.conf or /etc/apt/apt.conf.d
Attempting to download the failed URLs on a different, desktop computer through a web browser also fail with connection errors.
Perhaps related, attempting to download netinstall images with a desktop web browser from cdimage.debian.org always fail with a "The connection was reset" error.
My Arch Linux desktop computer can upgrade packages fine.
HTTP request sent, awaiting response... Read error (Connection reset by peer) in headers.