Very strange: apt update fails with 'connection failed' : WGET and curl do work!

[Ronald-at-VdW]

Hello,

I encounter a very strange issue here on a fresh install of ubuntu 24.04 when i do apt update I get:

[sudo] password for :
Ign:1 http://security.ubuntu.com/ubuntu noble-security InRelease
Ign:2 http://archive.ubuntu.com/ubuntu noble InRelease
Ign:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease
Ign:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease
Ign:1 http://security.ubuntu.com/ubuntu noble-security InRelease
Ign:2 http://archive.ubuntu.com/ubuntu noble InRelease
Ign:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease
Ign:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease
Ign:1 http://security.ubuntu.com/ubuntu noble-security InRelease
Ign:2 http://archive.ubuntu.com/ubuntu noble InRelease
Ign:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease
Ign:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease
Err:1 http://security.ubuntu.com/ubuntu noble-security InRelease
  Connection failed [IP: 185.125.190.83 80]
Err:2 http://archive.ubuntu.com/ubuntu noble InRelease
  Connection failed [IP: 91.189.91.82 80]
Err:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease
  Connection failed [IP: 185.125.190.81 80]
Err:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease
  Connection failed [IP: 185.125.190.83 80]
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/noble/InRelease  Connection failed [IP: 91.189.91.82 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/noble-updates/InRelease  Connection failed [IP: 185.125.190.81 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/noble-backports/InRelease  Connection failed [IP: 185.125.190.83 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/noble-security/InRelease  Connection failed [IP: 185.125.190.83 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.

But wget and curl just download the file fine!

wget http://archive.ubuntu.com/ubuntu/dists/noble/InRelease
--2025-07-03 16:01:59--  http://archive.ubuntu.com/ubuntu/dists/noble/InRelease
Resolving archive.ubuntu.com (archive.ubuntu.com)... 91.189.91.82, 185.125.190.82, 185.125.190.81, ...
Connecting to archive.ubuntu.com (archive.ubuntu.com)|91.189.91.82|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 255850 (250K)
Saving to: ‘InRelease’

InRelease                            100%[======================================================================>] 249.85K   697KB/s    in 0.4s

So what is happening here?