http request node broken by Ubuntu 16.04 LTS update?

Hi, we are hosting node-red 0.18.4 on a Ununtu 16.04 LTS machine with Docker.
Yesterday we did an apt-get update & apt-get upgrade on the server, and somehow this changed the behaviour of all our http request nodes. For some reason, the http request node could no longer find pages on different webservers we try to connect to with node-red.

The error messages are like:

!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>

404 Not Found

Not Found

The requested URL /cgi-bin/npcgi was not found on this server.


Apache/2.2.15 (Red Hat) Server at x.x.x.x Port 8080

The URL is available on that server though, as it is working fine on other systems. The error could be reproduced on other test systems.