bill@herrin.us said:

NTP you say? How does iburst work during initial sync up?

How does it work, or how should it work? 1/2 :) NTP has been around for a long time. It looks very simple, so anybody thinks they can toss off an implementation without much thought. It will probably work, mostly. The response from an NTP server includes a timestamp that the client put into the request. The client can use that to reject delayed responses to a previous request. When I first started looking for duplicates, I found lots of them. They were NTP version 1 requests. NTP is up to version 4. Version 1 came out in 1988, RFC 1059. Since the requests are identical, there is no way for the client to separate expected responses from delayed responses from a previous request. Does anybody happen to know what equipment or software or OS/distro is sending version 1 requests? -- These are my opinions. I hate spam.