ptp time sync issue

[linzha0]

Hi, we have a LIVOX-MID-70 in the lab. We used in ROS1 and ptpd time sync, it works perfect.
Now we switched to ros2 and currently using this ros2 driver.

Here are some setup:

1. LIDAR IP: 192.168.2.121
2. Network interfeace for Lidar:

$ ifconfig
enx207bd2b4ae56: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.111  netmask 255.255.255.0  broadcast 192.168.2.255
        inet6 fe80::365d:89e4:43d:ad24  prefixlen 64  scopeid 0x20<link>
        ether 20:7b:d2:b4:ae:56  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

3. PTPD output:

$ sudo ptpd -M -i enx207bd2b4ae56 -C
2025-08-25 16:12:28.248047 ptpd2[36343].startup (info)      (___) Configuration OK
2025-08-25 16:12:28.248699 ptpd2[36343].startup (info)      (___) Successfully acquired lock on /var/run/ptpd2.lock
2025-08-25 16:12:28.248928 ptpd2[36343].startup (notice)    (___) PTPDv2 started successfully on enx207bd2b4ae56 using "masteronly" preset (PID 36343)
2025-08-25 16:12:28.248959 ptpd2[36343].startup (info)      (___) TimingService.PTP0: PTP service init
2025-08-25 16:12:28.350019 ptpd2[36343].enx207bd2b4ae56 (notice)    (lstn_init) Now in state: PTP_LISTENING
2025-08-25 16:12:38.249027 ptpd2[36343].enx207bd2b4ae56 (notice)    (lstn_init) TimingService.PTP0: elected best TimingService
2025-08-25 16:12:38.249077 ptpd2[36343].enx207bd2b4ae56 (info)      (lstn_init) TimingService.PTP0: acquired clock control
2025-08-25 16:12:40.350295 ptpd2[36343].enx207bd2b4ae56 (notice)    (mst) Now in state: PTP_MASTER, Best master: 207bd2fffeb4ae56(unknown)/1 (self)

Everything seems works fine, but the header stamp still not sync. Any suggestions will be perfect ! Thanks so much!