I have done everything necessary to host a server like port-forwarding and firewalls, I am successful regarding ipv6-wise as my friends are able to connect and play on my minecraft server. However, I struck a problem when some of my mates do not have access to ipv6 as their ISP does not provide it. I tried to switch to ipv4 and bought a static ip from my ISP, however all of my devices on my network all share the same public ipv4 address. I was told by Aussiebroadband that they have done everything required of them and now is just the router that needs configuring. 

Also I am not sure how to locate the hardware version, apologies if it is incorrect.