In response to 0.0.0.0 day, Firefox Nightly version 131 had introduced a new security measure: blocking access to 0.0.0.0/::/::ffff:0.0.0.0 addresses. This change is currently live for Nightly users and will be gradually rolled out to all release users in the near future. Before we implement this ch...
What is the use case for 0.0.0.0
Just in case you want to do nothing, nowhere in particular.
0.0.0.0 binds to all addresses on the machine for servers, but I don’t know what a browser would do when trying to resolve it. I guess look at all addresses on the machine and see if anything has bound to the indicated port on that address? First one it finds wins?