Miguel Gonçalves wrote:

In my opinion, totally unnecessary. Some people on the Internet are strange.
If you don't have anything to say why waste your time? Perhaps you have a lot 
of free time?

Although I don't always agree with Unruh, I think he was quite right here. He understated the DoS vulnerability and told the OP what was necessary to have a reasonable chance of getting a useful answer.

In fact, a quick Google suggests that this is nothing to do with the reference implementation, for which this forum, and the attached mailing list, have expertise, but some openbsd software, possibly their openntpd package, which, at least at one time, was really an SNTP package.

These messages actually seem to exist to allow a narrow interface to a security kernel that does the actual privileged operations, so not validating them is particularly bad from a security point of view.

Yes it is definitely OpenNTPD. Although I cannot find a link from the project page to a forum or other support mechanism, the OP needs to go to the openBSD community if he has specific reasons to use openNTPD.

Telling us it was openNTPD from the start would have avoided wasted time.
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