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TCPDUMP Missing response Code header in Back to back execution

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I am running two TCPDUMP Commands back to back. Here is the sequence 1. Run the below command root@open5Gs:/home/test# tcpdump -l -vvv -s0 -i any -B 4096 -nn -w /home/test/tc060.pcap -c 1500 2. Execute Test Case 3. Wait until tcpdump completes packet capture
root@open5Gs:/home/test# tcpdump -l -vvv -s0 -i any -B 4096 -nn -w  /home/test/tc060.pcap -c 1500
tcpdump: listening on any, link-type LINUX_SLL (Linux cooked v1), capture size 262144 bytes
1500 packets captured
2588 packets received by filter
0 packets dropped by kernel
4. Execute command for Next Packet capture tcpdump -l -vvv -s0 -i any -B 4096 -nn -w /home/test/tc078.pcap -c 1500 and repeat steps 1 to 3 The Problem I am seeing is as soon as back to back tcpdump command is run for the 2nd PCAP response code is not captured. No Response Code available But If I wait for some time after execution completion of first tcpdump and rerun the 2nd tcpdump command. I can see the response code enter image description here Can anyone help me to understand why this is happening? Why 2nd TCPDUMP command expecting a delay post execution of 1st tcpdump command execution
Asked by Sayantan_Dell (11 rep)
Feb 21, 2023, 11:28 AM
Last activity: Feb 21, 2023, 03:34 PM