NTP Server is synced while its not responding

[bakr]

Hello friends ,
i have some wired issue the NTP server is showing gps state when trying ntpq -p while its not responding when trying ntpdate as below ,

ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
+10.12.3.155 .GPS. 1 u 8 128 377 7.182 0.582 0.296
*10.12.3.156 .GPS. 1 u 1 128 377 5.578 -0.260 0.389




ntpdate -d 10.12.3.155
29 Apr 01:42:41 ntpdate[23017]: ntpdate [email protected] Tue Oct 25 12:54:51 UTC 2011 (1)
Looking for host 10.12.3.155 and service ntp
host found : 10.12.3.155
transmit(10.12.3.155)
transmit(10.12.3.155)
transmit(10.12.3.155)
transmit(10.12.3.155)
transmit(10.12.3.155)
10.12.3.155: Server dropped: no data
server 10.12.3.155, port 123
stratum 0, precision 0, leap 00, trust 000
refid [10.12.3.155], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time: 00000000.00000000 Thu, Feb 7 2036 8:28:16.000
originate timestamp: 00000000.00000000 Thu, Feb 7 2036 8:28:16.000
transmit timestamp: e2533df4.83dc26dc Wed, Apr 29 2020 1:42:44.515
filter delay: 0.00000 0.00000 0.00000 0.00000
0.00000 0.00000 0.00000 0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
0.000000 0.000000 0.000000 0.000000
delay 0.00000, dispersion 64.00000
offset 0.000000

29 Apr 01:42:45 ntpdate[23017]: no server suitable for synchronization found