I am using Wireshark to investigating poor performance on an internal LAN. One Windows 10 PC is accessing SQL Server on another Windows 10 PC over a powerline. I do not understand why the Arrival Time stamped on packets by Wireshark differs by over a second on the two PCs.
Wireshark running on the transmitting PC shows the Arrival Time for a packet being sent is 14:45:27.8. Wireshark running on the receiving PC shows this packet's Arrival Time as 14:45:26.4. [The round trip time to ACK the segment was 7 milliseconds]
Both PCs are running Windows 10 and both system clocks are synchronized to time.nist.gov. My understanding is that the Arrival Time shown by Wireshark comes from the Windows system time via Npcap.
Why are the times shown on each PC so different for the same frame?
