Been trying to work out how to set up 2 masternodes on my mac for hours now. I need more info than what I've read from Coinonatx's info to set up 2 masternodes. From what I've gathered, I need an IP address with 2 separate Port addresses for each of the 2 nodes.

1) Do I use the internal IP address which I get from my mac's system preferences > Network > IP address (which I believe is IPv4 ?) or do I get it from 'whatismyipaddress.com '  for an external Dynamic IP ? Also do I need a static IP address and is this the internal address?

2) For these 2 Masternodes do I need to set up 'port forwarding' via my modems software? If so, my modems software asks me for the software for  a "port mapping application" ? It also asks for a external, as well as internal port number. It won't allow blank or zero values for internal port number ? Next it asks for protocol i.e. TCP or UDP or both?

3) Can you use the IPv6 address given in the 'network' preferences just listed in my 2nd question?

It would be great if someone can set up a page with clear, step by step instructions inclusive of screen shots?

Thanks.