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My machine's local host IP address is, and I do loopback test  on Windows 10.
I use two ping commands as follows, but both are failed (responded by saying "PING: Transmit failed
General failure")
C:\> ping -S
C:\> ping -S
Can someone help explain that to me?
There are no problems if I use the ping commands
C:\> ping   AND  C:\>ping
asked in Computer Networks by (21 points)
edited by | 50 views
What is the use of "-S"?
-S <srcaddr> means to designate the source IP address of this icmp datagram.

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