Yesterday I published about the insertion of a leapsceond (in Dutch: schrikkelseconde).
About 45 minutes ago I added an update to this post (please scroll down) and discovered that -at that ‘time’- the Russian Institute of Metrology for Time and Space (IMVP/VNIIFTRI) lacked to insert the leapsecond in their public NTP servers.

To my surprise, I discovered the following around 13.00 UTC (14.00 LT):

remco@helium [/home/remco]> ntpdate -q ntp3.imvp.ru
server 62.117.76.138, stratum 1, offset 1.004891, delay 0.08247
1 Jan 13:53:49 ntpdate[21218]: step time server 62.117.76.138 offset 1.004891 sec
remco@helium [/home/remco]> ntpdate -q ntp3.imvp.ru
server 62.117.76.138, stratum 1, offset 0.075734, delay 0.22472
1 Jan 14:07:02 ntpdate[22005]: adjust time server 62.117.76.138 offset 0.075734 sec
remco@helium [/home/remco]> ntpdate -q ntp1.imvp.ru
server 62.117.76.142, stratum 0, offset 0.000000, delay 0.00000
1 Jan 14:07:18 ntpdate[22025]: no server suitable for synchronization found
remco@helium [/home/remco]> ntpdate -q ntp3.imvp.ru
server 62.117.76.138, stratum 1, offset 0.004711, delay 0.08287
1 Jan 14:07:38 ntpdate[22028]: adjust time server 62.117.76.138 offset 0.004711 sec
remco@helium [/home/remco]> ntpdate -q ntp4.imvp.ru
server 62.117.76.140, stratum 1, offset 2.005414, delay 0.08316
1 Jan 14:07:42 ntpdate[22032]: step time server 62.117.76.140 offset 2.005414 sec
remco@helium [/home/remco]> ntpdate -q ntp2.imvp.ru
server 62.117.76.141, stratum 0, offset 0.000000, delay 0.00000
1 Jan 14:08:07 ntpdate[22034]: no server suitable for synchronization found
remco@helium [/home/remco]> ntpdate -q ntp1.imvp.ru
server 62.117.76.142, stratum 1, offset 0.004364, delay 0.08261
1 Jan 14:11:48 ntpdate[22302]: adjust time server 62.117.76.142 offset 0.004364 sec
remco@helium [/home/remco]> ntpdate -q ntp2.imvp.ru
server 62.117.76.141, stratum 1, offset 0.004940, delay 0.08292
1 Jan 14:11:53 ntpdate[22303]: adjust time server 62.117.76.141 offset 0.004940 sec

Either it was a (late) planned reboot, insertion of a leapsecond, or . . . . the IMVP is tracking this Blog?!!

However, one machine is forgotten . . .  or is it part of the Russian contribution to the ISS and located in space? ; -) :
remco@helium [/home/remco]> ntpdate -q ntp4.imvp.ru
server 62.117.76.140, stratum 1, offset 2.005239, delay 0.08321
1 Jan 14:26:14 ntpdate[23108]: step time server 62.117.76.140 offset 2.005239 sec

remco@helium [/home/remco]> ntpq -p ntp4.imvp.ru
remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
LOCAL(0)        .LCL.            1 l   52   64  377    0.000    0.000   0.000
+GENERIC(0)      .GPS.            0 l   31   64  377    0.000   -0.002   0.004
oPPS(0)          .PPS.            0 l   64   64  377    0.000    0.002   0.004
xntp1.imvp.ru    .IMVP.           1 u  834 1024  377    0.966  -1999.9   0.000