The "-i any" option of tcpdump doesn't operate as expected. - Red Hat Customer Portal

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Issue

When using tcpdump command with "-i any" option, and using bonding interface(mode is active-standby), tcpdump output isn't expected.
Output of TX packet is duplicate, but Output of RX packet isn't duplicate. Our customer expects both outputs is duplicate.
So, They have two questions.
1. Which is the interface that captured the RX packet? (ethX? or bondX?)
2. Why isn't output of RX packet duplicate?

Environment

Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6

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