Comment 15 for bug 2034656

Maybe it is this as Grant (orndorffgrant) mentioned earlier?

| APT::Periodic::Download-Upgradeable-Packages "0";

During the time of a surge, we saw this:

| Hits h% Vis. v% Bandwidth Mtd Proto Data
| ----- ------ ----- ------ ----------- ---- -------- ----
| 3772 0.82% 2461 0.85% 56.62 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-modules-extra-5.4.0-1116-azure_5.4.0-1116.123~18.04.1_amd64.deb
| 3246 0.71% 2147 0.74% 41.55 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-modules-5.4.0-1116-azure_5.4.0-1116.123~18.04.1_amd64.deb
| 3850 0.84% 2585 0.89% 41.15 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-azure-5.4-headers-5.4.0-1116_5.4.0-1116.123~18.04.1_all.deb
| 3580 0.78% 2364 0.81% 32.93 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-signed-azure-5.4/linux-image-5.4.0-1116-azure_5.4.0-1116.123~18.04.1_amd64.deb
| 3607 0.78% 2478 0.85% 18.01 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-azure-5.4-tools-5.4.0-1116_5.4.0-1116.123~18.04.1_amd64.deb
| 3523 0.77% 2413 0.83% 5.33 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-headers-5.4.0-1116-azure_5.4.0-1116.123~18.04.1_amd64.deb
| 3635 0.79% 2510 0.86% 2.00 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-azure-5.4-cloud-tools-5.4.0-1116_5.4.0-1116.123~18.04.1_amd64.deb
| 3604 0.78% 2508 0.86% 1.93 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-cloud-tools-5.4.0-1116-azure_5.4.0-1116.123~18.04.1_amd64.deb
| 3431 0.75% 2421 0.83% 1.83 GiB GET HTTP/1.1 /infra/ubuntu/pool/main/l/linux-azure-5.4/linux-tools-5.4.0-1116-azure_5.4.0-1116.123~18.04.1_amd64.deb

This kernel would be for Bionic VMs in Azure - as Junien (axino) has pointed out earlier.

`APT::Periodic::Download-Upgradeable-Packages` is defined in `/etc/apt/apt.conf.d/10periodic` and shipped out via `update-notifier-common`.