Unreachable addresses in Bitcoin GETADDR responses

Thanks for posting! I think this addr-spam is interesting, but I didn’t get a chance to look closer into it while it happened. I should have data from the connectivity-check peer-observer tool (“A peer-observer tool that checks the connectivity of received addr(v2) message entries by connecting to the addresses and trying to do a version handshake. The results are recorded in a CSV file.”). If someone is interested in diving deeper, I’m happy to share this. This should give us an overview over:

  • how many IPs were gossiped in addr messages over time?
  • how many of then were unreachable?
  • which are unreachable ones that appeared only after the addr-spam started?
  • are there any specific IP or timing patterns?

Happy to share that data, just reach out! Not going to post it publicly just yet as it contains IPs.