https://www.nsnam.org https://www.nsnam.org looks like a good idea, but my head is spinning from the first tutorials - I'd love a "network simulator" that could

https://www.nsnam.org https://www.nsnam.org looks like a good idea, but my head is spinning from the first tutorials - I'd love a "network simulator" that could just replay pcap files. Do you think that programmers watching and understanding some of what's going on in a Wireshark session would help?