It's humbling to know that the RAM of computers like ZX Spectrum and Commodore 64 would fit in a single IP packet. It took minutes to load that "paket" from cassette tape.
With IPv6 there is even an extension to go to 4 GB packets (extremely rare to actually be implemented though), which you can send in less than 100 ms with an 800G NIC!
Heh. Anyone remember the ping of death[0]? A lot (most?) of computers on the early internet didn't properly handle large packets, _especially_ from ICMP pings. Once upon a time, you could send a single ping w/ a packet size of 65536 and crash the remote.