1. 2012-02-29 [9] [ntp:hackers] NTP Development Snapshot 4.2.7p256 Rele ntp-hacke NTP Public Se 2. 2012-02-23 [1] [ntp:hackers] EFF Wins Protection for Time Zone Datab ntp-hacke Mark Martinec 3. 2012-02-08 [17] [ntp:hackers] kernel PPS time quality ntp-hacke todd glassey