Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you are not able to ping between your Linux VM and Windows VM in the same subnet.
I take it that the
- Private IP of Linux VM is 172.16.254.4
- And Private IP of Windows VM is 172.16.254.5
From the packet capture, (Windows VM to Linux VM)
- We can see the packets are being received by the Linux VM
- This indicates that the platform routing is correct
- However, the Linux VM is not even responding to the ICMP Ping requests.
- This indicates there is some misconfiguration/issue in the OS of the Linux VM
- In case the Linux VM has responded with a ICMP Ping reply and the Windows VM has not seen it, we can suspect there is a routing issue or packet drop at the platform.
- Also, since you stated the issue is no longer reproducible once you had rebooted the system, further indicates this has something to do with the OS (OS level firewall/IP tables)
Should the issue resurface again, I would suggest you to may file a support ticket, where a support engineer can have a specialized 1:1 screen share session to pinpoint the issue.
Kindly let us know if this helps or you need further assistance on this issue.
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