How to check QUEUE (iptables)?

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I use iptables to filter incoming packets with some particular protocols, such as ICMP, and the target is QUEUE.

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Chain INPUT (policy ACCEPT)
target prot opt source destination
QUEUE icmp -- anywhere anywhere

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

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How can I check the packets are filtered and put in the QUEUE?

Thanks