System Diagnostic show next ping result:

Finding host ntp2.time.in.ua by DNS server (1 of 2).

Pinging ntp2.time.in.ua [31.28.161.71] with 64 bytes of data:

Reply from 31.28.161.71: bytes=64 time=16ms TTL=61 (seq=0).

Reply from 31.28.161.71: bytes=64 time=1ms TTL=61 (seq=1).

Reply from 31.28.161.71: bytes=64 time=1ms TTL=61 (seq=2).

Reply from 31.28.161.71: bytes=64 time=1ms TTL=61 (seq=3).

Ping statistics for 31.28.161.71:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss).

Approximate round trip times in milli-seconds:

Minimum = 1ms, Maximum = 16ms, Average = 4ms

But from clients (through WiFi) ping to ntp2.time.in.ua show at least 15 ms at the same time to router ~1ms.

Questions:

1.Why is there such a big ping (15ms) from clients?
2.Does the system ping show correctly (1ms)?