IPv4 Traffic started increasing on Dec 13. IPv6 traffic was unchanged (times in this graph are US/Central) [image] Traffic follows the pattern of peaks in the US Daytime/evening, valleys in the US nighttime. Traffic was seen to a wide variety of different regional NTP pools: New Zealand, United K…

I made a github issue on the library with the hardcoded pool.ntp.org zone names. As people pointed out on IRC, using the continent names doesn’t make much sense in virtually all cases. That we have them is really mostly a historical artifact. :-/ (Probably it’d make sense to deprecate them on the …

Snapchat has posted a fixed application to iTunes (pending approval). I’ve updated the first post with that info.

Reports on IRC says that the update is out now and in initial testing by Leo Bodnar it appears to not do NTP queries anymore (or at least more selectively…).

This graph shows the NTP traffic matching the ios-ntp library fingerprint on my NTP server: [image]

NTP Traffic today is down roughly 25% compared to yesterday, which is a good sign.

Snapchat added NTP servers to the Australia and Brazil pools last night as well - https://mailman.nanog.org/pipermail/nanog/2016-December/089620.html

Tom Yates wrote a nice article about this for LWN, though I think he got the affect on the pool wrong. The big zones managed okay in terms of server loss, but in particular South America and Africa were barely sustaining already and got decimated pretty badly. The server count graph for Australia …

[image] ddrown: NTP Traffic today is down From the viewpoint of a server in the US pool, things are largely back to normal although traffic is still slightly elevated than prior to the event. The graphs below show received packets per second and bandwidth in/out for a server in the US pool w…

Hello everyone! (sorry for sort-of necro-ing) I stumbled upon this fascinating event via the wikipedia entry . That entry still represented the state of Dec 20th, i.e. in the heat of battle, before fixes were applied. I took the liberty of bringing the wiki-entry up to date. I hope I’ve characteri…

Recent NTP pool traffic increase

Server operators

Topic		Replies	Views
Excessive NTP query event, December 2016 Server operators	1	2037	December 30, 2016
Sudden traffic burst lasting only few second is detechted in my old android phone ntp server	4	539	May 26, 2020
URGENT!Unexplained 20-30 percent increase in traffic through my server(note that there is NO other application running on server) Server operators	14	999	April 16, 2021
World-wide pool traffic volume Server operators	6	2186	March 9, 2018
Steady traffic increase BE since around midnight CET yesterday Server operators	52	556	December 24, 2025

Recent NTP pool traffic increase

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