[Bug 2139398] [NEW] Slow connectivity to Ubuntu ports mirrors from AWS ap-southeast-2

[Alex Chaus]

Public bug reported:

Very slow throughput and occasional timeouts are observed when
provisioning new Ubuntu 24.04 ARM servers in AWS (ap-southeast-2
region). The issue appears to affect connectivity to the following
mirrors:

- ap-southeast-2b.clouds.ports.ubuntu.com
- ap-southeast-2a.clouds.ports.ubuntu.com
- ports.ubuntu.com

Environment:

- Platform: AWS EC2
- Region: ap-southeast-2 (Sydney)
- Instance type: t4g.small (ARM / aarch64)
- OS image: Ubuntu 24.04 default cloud image

Observed behaviour:

- Very low download throughput during apt update / package installation
- Provisioning delays / timeouts
- High latency and intermittent packet loss during ping tests

Workaround:

Switching to the AARNet mirror (mirror.aarnet.edu.au) significantly
improves throughput and provisioning completes normally

Additional notes:

- This behaviour appears consistent across multiple newly provisioned
and existing instances

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apt australia aws mirror repository

** Attachment added: "PfgUdYymjZ.png"
   https://bugs.launchpad.net/bugs/2139398/+attachment/5941554/+files/PfgUdYymjZ.png

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https://bugs.launchpad.net/bugs/2139398

Title:
  Slow connectivity to Ubuntu ports mirrors from AWS ap-southeast-2

Status in apt package in Ubuntu:
  New

Bug description:
  Very slow throughput and occasional timeouts are observed when
  provisioning new Ubuntu 24.04 ARM servers in AWS (ap-southeast-2
  region). The issue appears to affect connectivity to the following
  mirrors:

  - ap-southeast-2b.clouds.ports.ubuntu.com
  - ap-southeast-2a.clouds.ports.ubuntu.com
  - ports.ubuntu.com

  Environment:

  - Platform: AWS EC2
  - Region: ap-southeast-2 (Sydney)
  - Instance type: t4g.small (ARM / aarch64)
  - OS image: Ubuntu 24.04 default cloud image

  Observed behaviour:

  - Very low download throughput during apt update / package installation
  - Provisioning delays / timeouts
  - High latency and intermittent packet loss during ping tests

  Workaround:

  Switching to the AARNet mirror (mirror.aarnet.edu.au) significantly
  improves throughput and provisioning completes normally

  Additional notes:

  - This behaviour appears consistent across multiple newly provisioned
  and existing instances

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