I really like digging into the "magic" like this. If anyone interested I have a notebook that goes from here to being able to send pings across the internet (wh

I really like digging into the "magic" like this. If anyone interested I have a notebook that goes from here to being able to send pings across the internet (which actually are packets): https://github.com/georgek/notebooks/blob/master/internet.ipynb https://github.com/georgek/notebooks/blob/master/internet.ip... I was going to implement TCP, but got bored (it suddenly becomes way more difficult)... It's just so amazing to me to behold the entire network stack and the fact it actually works (even if IPv4 is clinging on at this stage).