3 ms·

So for automatic bootstrap use a hard-coded or generated list of long-lived nodes or a list downloaded from different p2p systems. The hard-coded list could be

• the8472 6y ago
  Or you defer bootstrap until you have some channel on which you can piggyback. For example if you download some file then you need to exchange some content-identifying token anyway, a magnet link in bittorrent. That link can also contain a bunch of nodes the source peer knows, preferably the longest-lived ones it knows. Depending on where it's used you could also turn this into a QR-code, NFC peer or whatever. Practically speaking an implementation will already contain a bootstrap list or might download it from somewhere else on first start. But that's just for convenience.