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For questions about the Internet Control Message protocol.

3 votes
2 answers
2k views

Strange router's MAC address from ICMP Echo Reply?

Using Wireshark to capture ICMP packets (Windows) using ping to google.com, I can see the source-MACAddr of the ICMP Echo replies is not the same as the MAC address of my direct router (which is the dest-MACAddr … Another interesting fact is that whatever IP address I ping to, the source MAC address of icmp-echo-reply is always the strange one, but not my router's MAC address. …
David Tran's user avatar