Retry failure modes seem to be a recurrent theme in networking, see e.g. http://en.wikipedia.org/wiki/NTP_server_misuse_and_abuse http://en.wikipedia.org/wiki/N

Retry failure modes seem to be a recurrent theme in networking, see e.g. http://en.wikipedia.org/wiki/NTP_server_misuse_and_abuse http://en.wikipedia.org/wiki/NTP_server_misuse_and_abuse Instead of hacking relays to prioritize one botnet version over another, they should properly implement rate-limiting algorithms like exponential backoff in case of failure.