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David_UK
Contributor I
April 2, 2019

Sonos time update every second ?!

Why do my Sonos products constantly try to update their time EVERY single second.
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    passopp
    passopp
    April 2, 2019
    Why do my Sonos products constantly try to update their time EVERY single second.Because time itself updates every second?

    Future history books will refer to this exact moment as the beginning of The Great Correction. :8
    Stanley_4
    Stanley_4
    Grand Maestro
    April 3, 2019
    Running packet capture on my firewall and I wasn't seeing any Sonos related ntp packets so I power-cycled a ZP and got one.

    18:40:20.415504 IP SonosZP80-AC.home.32774 > tick.no-such-agency.net.ntp: UDP, length 48
    18:40:20.444057 IP tick.no-such-agency.net.ntp > SonosZP80-AC.home.32774: UDP, length 48

    Last look Sonos was using [0|1|2|3].sonostime.pool.ntp.org for this not the above resolved name.

    If ntp is getting good time responses it shouldn't be doing many checks, when it fails it should initially do more but back off to a less intrusive level after several failures.

    You can play with ntp date as root or sudo, -4 means use IPv4 and you can use 0 to 3 for the first bit:

    ntpdate -4 3.sonostime.pool.ntp.org

    You should see a response like this:

    2 Apr 19:27:26 ntpdate[4157]: adjust time server 162.210.111.4 offset 0.003380 sec
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