How do I create an "artificial" redirect on iPad?
There's no IP address named 0.0.0.0. Therefore you cannot be running a web server on that address, and that is the reason why your iPad cannot open such an address.
You might be confused because when programming, it is usually possible to specify that you want to bind for example port 8080 on 0.0.0.0. However in that case, 0.0.0.0 is not an address - it is a specific non-address values that means that indicates to the operating system that you want to bind port 8080 on any network interface (i.e. on all the IP-addresses on your computer).
The problem here is not with the iPad. Instead you have a misconfiguration on your server that has caused it to send out redirections to 0.0.0.0. Those redirections are invalid in themselves. Ordinarily servers like that are by default setup to redirect to the same IP address that the user accessed the server by initially.