On 28-03-09 10:28, David J Taylor wrote:
> On my own system, the following nodes are incorrectly showing a 
> leap-second for April 1st:
> dns0.rmplc.co.uk
> ntp1.arse.org
> ntpt1.core.theplanet.net
> calx.pulsewidth.org.uk
> scarlett.lon.rewt.org.uk

On my system (st.3), the following node incorrectly shows a leap-second:
  ntp2.hro.nl
This system is stratum 2 and in the pool, but blocks ntpq, so I don't know
which st.1 is spreading the leap info.

I now block replies with a leap-second flag set with the following rules:
  iptables -I dynNTP -m u32 --u32 "0>>22&0...@8>>24&0xC7=0x84" -j DROP
  iptables -I dynNTP -m u32 --u32 "0>>22&0...@8>>24&0xC7=0x44" -j DROP

When a leap second occurs, I'll remove the rules manually.

Now my system cleared the leap_flag again :-)

Arnold

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