I've just found http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=617965 and https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/427775. This might be a duplicate of that issue.
I've just found http:// bugs.debian. org/cgi- bin/bugreport. cgi?bug= 617965 and https:/ /bugs.launchpad .net/ubuntu/ +source/ ntp/+bug/ 427775. This might be a duplicate of that issue.