Ah, silly blind copy-pasting on my part. With "jessie/updates" it works. Thanks! The message I was referring to, which looks like it's indicating that security

Ah, silly blind copy-pasting on my part. With "jessie/updates" it works. Thanks! The message I was referring to, which looks like it's indicating that security.debian.org is trying to redirect: # apt -o Acquire::http::AllowRedirect=false update ... Err http://security.debian.org jessie/updates/main Sources 302 Found [IP: 217.196.149.233 80] Err http://security.debian.org jessie/updates/main amd64 Packages 302 Found [IP: 217.196.149.233 80] Err http://security.debian.org jessie/updates/non-free amd64 Packages 302 Found [IP: 217.196.149.233 80] Err http://security.debian.org jessie/updates/main i386 Packages 302 Found [IP: 217.196.149.233 80] Err http://security.debian.org jessie/updates/non-free i386 Packages 302 Found [IP: 217.196.149.233 80] Fetched 422 kB in 2s (169 kB/s) W: Failed to fetch http://security.debian.org/dists/jessie/updates/main/source/Sources 302 Found [IP: 217.196.149.233 80] W: Failed to fetch http://security.debian.org/dists/jessie/updates/main/binary-amd64/Packages 302 Found [IP: 217.196.149.233 80] W: Failed to fetch http://security.debian.org/dists/jessie/updates/non-free/binary-amd64/Packages 302 Found [IP: 217.196.149.233 80] W: Failed to fetch http://security.debian.org/dists/jessie/updates/main/binary-i386/Packages 302 Found [IP: 217.196.149.233 80] W: Failed to fetch http://security.debian.org/dists/jessie/updates/non-free/binary-i386/Packages 302 Found [IP: 217.196.149.233 80] E: Some index files failed to download. They have been ignored, or old ones used instead.