- Update to version 4.4:
* Version 4.4
* ts2phc: check is_running in ts2phc_pps_sink_poll()
* ts2phc: check for errors on polling the sink devices
* timemaster: Wait for udev to set up vclock devices.
* ts2phc: Fix description of holdover option in man page.
* ts2phc: Describe servo options in man page.
* nmea: Fix tm_isdst uninitialized
* Complete SNMP cleanup.
* Add permanent subscription option
* rtnl: check if the kernel provides if_team
* port: Drop received 802.1AS packets with invalid transportSpecific values
* ts2phc: Fix timestamp conversion for leap seconds.
* nmea: Fix conversion of leap second.
* ts2phc: Reset parser after RMC message.
* Drop example snmpd.conf.
* ts2phc: Add option to correct for NMEA delay.
* ts2phc: Allow longer NMEA delays.
* ts2phc: Move upper/lower rejection limit calculation.
* ts2phc: Fix edge rejection for pulse widths over 0.5s.
* ts2phc: Provide source type.
* Filter any PTP frames with the source MAC of the local interface
* ts2phc: Add holdover support.
* ts2phc: Avoid unnecessary call of getppstime().
* Version 4.3
* ts2phc: Use CLOCK_MONOTONIC_RAW for NMEA PPS timestamp.
* nsm: add authentication tlv for nsm
* pmc: add authentication tlv for pmc
* msg: add authentication tlv in management handling
* sad: introduce sad_update_auth_tlv()
* man: add man/README updates for authentication tlv
* sad: introduce sad_append_auth_tlv() and sad_generate_icv()
* sad: introduce sad_set_last_seqid() and sad_check_seqid()
* port: add security processing to bc_event()
* sad: introduce sad_process_auth() and sad_check_auth_tlv()
* sad: introduce openssl mac library
* sad: introduce gnupg mac library
* sad: introduce gnutls mac library
* sad: introduce nettle mac library
* sad: introduce security association database
* tlv: add authentication tlv
* udp+udp6: Make IP addresses configurable.
* Add support for '-l' option to tz2alt.c as documented in its man page.
* Clean up compiler warnings about print_level.
* Clean up compiler warning in ts2phc_pps_sink.c.
* Clean up compiler warning in ts2phc.c.
* Clean up compiler warning in port.c.
* README: update mailing list.
* ts2phc: interact with new kernel timestamp channel masks
* lstab: Update Leap Second table validity
* Fix indentation in example configs.
* Document allowedLostResponses option.
* config: Allow port sections with longer names.
* sk: Fix descriptor leak in sk_get_if_info().
* lstab: Don't free lstab on update.
* lstab: Limit number of parsed leap seconds.
* uds: Warn if replacing existing socket.
* Add example Common Mean Link Delay Service configuration files.
* Implement the COMMON_P2P delay mechanism.
* Add a push notification for the CMLDS TLV.
* Introduce the Common Mean Link Delay Information TLV.
* pmc: Make SET SUBSCRIBE_EVENTS_NP forwards compatible.
* pmc/uds: Configure the remote server address using the interface API.
* interface: Add an optional remote address for use by the UDS transport.
* ts2phc: Don't switch system clock to nanosecond mode.
* Version 4.2
* phc_ctl: Use util.h NSEC_PER_SEC macro instead of local macro
* servo: Use util.h NSEC_PER_SEC macro instead of local macro
* port: Use util.h NSEC_PER_SEC macro instead of local macro
* util: Introduce NSEC_PER_SEC macro
* port: Fix multiple pdelay response handling
* Make allowedLostResponses configurable
* ptp4l: Allow advertisement of legacy PTP 2.0 protocol
* msg: Enable changing PTP message header version
* linuxptp: Use ${CC} in incdefs.sh
* include string.h for strncpy()
* lstab: Update leapfile validity
* print: Support log level in message tag.
* phc2sys: Stop synchronization when ptp4l stops responding.
* phc2sys: Better indicate domain with realtime clock.
* pmc_agent: Make update interval configurable.
* pmc_agent: Add function to check if still subscribed.
* port: set_tmo_log() timer interval calculation fix
* Add notification for changes in PARENT_DATA_SET.
* clock: Downgrade log message about failed uds forward.
* Avoid conflicting port IDs over PMC UDS
* phc_ctl: Use pr_notice instead of pr_err for displaying adjusted frequency
* phc_ctl: Add maximum offset capability
* phc_ctl: Add phase command to support ADJ_OFFSET