[ntp:questions] WARNING: someone's faking a leap second tonight

Nathan Stratton Treadway nathanst+ntp-questions at ontko.com
Sat Aug 4 22:08:00 UTC 2012


On Thu, Aug 02, 2012 at 05:57:43 +0000, Dave Hart wrote:
> On Thu, Aug 2, 2012 at 1:17 AM, Chris Adams wrote:
> > I'm still seeing leap=01 from 204.235.61.9 (name1.glorb.com), a
> > stratum-2 server in the US pool (a few of my systems have it in their
> > list).
> 
> That particular system seems to have corrected its leap indication,

I noticed that name1.glorb.com is annoucing a leap second insertion
again just now:
  # date -u; ntpq -c "rv 0 leap,stratum,refid" name1.glorb.com
  Sat Aug  4 21:55:10 UTC 2012
  leap=01, stratum=2, refid=209.51.161.238

It seems that one (and only one) of its upstream servers is also showing
"leap=01":

  # ntpq -c "lassoc" -c "mrv &1 &999 leap,srcadr,stratum" name1.glorb.com | grep -E "leap=([^0].|.[^0])"
  srcadr=truechimer.cites.illinois.edu, leap=01, stratum=1
  srcadr=time-b.nist.gov, leap=11, stratum=1

So it appears in this case "name1"'s leap flag does come and go over
time... but it's not as simple "use the current system peer's leap flag
value" (since the currently-listed refid [209.51.161.238] is a server
that does NOT have the leap flag set...).

					Nathan 


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