Question about NFQUEUE

[Bahamin Takhtaei <takhtaei@xxxxxxxxxxxx>]

Hi everyone!
I add some rules to iptables such as:
"iptables -A INPUT -p icmp -j NFQUEUE"
and handle icmp packets by a program in userspace,
but I want that the packets come back to NFQUEUE later.
Please tell me what should I do?

Thank you,
Bahamin