Miroslav, The kernel is 4.4.26. The problem appears to be hardware timestamping and multiple interfaces.
Here is the test setup: 3 identical hardware NTP units. Two accessible via switch on igb0. One accessible vi igb3 as a directly connected IP point to point. Here are test results: test 1 - hw stamps off for all interfaces - all ntp servers enabled - result: K K for all servers (as expected) test 2 - hw stamps on for igb0 - all ntp servers enabled - result: H H for servers attached via igb0, D K for server attached via igb3 test 3 - hw stamps on for igb3 - all ntp servers enabled - result: D K for servers attached via igb0, mixed D H and H H for server attached via igb3 test 4 - hw stamps on for both igb0 and igb3 - all ntp servers enabled - result: H H for one server attached via igb0, mixed H H and D H for other server attached via igb0, mixed H H and D H for server attached via igb3 test 5 - hw stamps on for igb0 - ntp servers attached via igb0 enabled, server attached via igb3 disabled - result: H H for both servers (as expected) test 6 - hw stamps on for igb3 - ntp servers attached via igb0 enabled, server attached via igb3 disabled - result: D K for both servers test 7 - hw stamps on for igb0 - ntp servers attached via igb0 disabled, server attached via igb3 enabled - result: D K test 8 - hw stamps on for igb3 - ntp servers attached via igb0 disabled, server attached via igb3 enabled - result: mixed D H and H H Denny > On Nov 10, 2016, at 11:45, Miroslav Lichvar <mlich...@redhat.com> wrote: > > On Thu, Nov 10, 2016 at 11:25:31AM -0800, Denny Page wrote: >> Miroslav, >> >> And D H? > > D means daemon, i.e. no SW or HW timestamp. The first one is for > transmit timestampt, the other one for receive timestamp. If only the > first entry in the log is like that, then it's ok. If not, something > is wrong. What kernel version do you have? It might help if we could > see the debug output from chronyd -d -d when compiled with the > --enable-debug option. > > -- > Miroslav Lichvar > > -- > To unsubscribe email chrony-dev-requ...@chrony.tuxfamily.org with > "unsubscribe" in the subject. > For help email chrony-dev-requ...@chrony.tuxfamily.org with "help" in the > subject. > Trouble? Email listmas...@chrony.tuxfamily.org. > -- To unsubscribe email chrony-dev-requ...@chrony.tuxfamily.org with "unsubscribe" in the subject. For help email chrony-dev-requ...@chrony.tuxfamily.org with "help" in the subject. Trouble? Email listmas...@chrony.tuxfamily.org.