ping-node-libp2p
Run
$ node index.js
Other Instance
$ node index.js /ip4/127.0.0.1/tcp/33211/p2p/Qmcyzu55EF4oicTnwHNkGkcCa3oB9hgJb31fvGQSfCXQij
Replace address with the one from the first instance
$ node index.js
$ node index.js /ip4/127.0.0.1/tcp/33211/p2p/Qmcyzu55EF4oicTnwHNkGkcCa3oB9hgJb31fvGQSfCXQij
Replace address with the one from the first instance