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How does a computer create a 'Response' packet?
(infosec.pub)
All things enterprise network engineering, design, and architecture.
I recently tested this using wireshark. When I run packet capture on nic1 of dstPC I see ping request packets coming, but no response packets leaving the interface. On nic2 I don't see any packets leaving either. So kind of stumped what is happening. It seems the computer just drops the response packet and it never makes it till any nic. But still don't have a good explanation of WHY the packet gets dropped.
Probably rp filtering.
https://tldp.org/HOWTO/Adv-Routing-HOWTO/lartc.kernel.rpf.html