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netfilter-nfqueue-samples's Issues

Difference in output result for the code sample-helloworld

Why the difference in output result for the same code ?

on actual AMD Ubuntu PC platform :

dell@dell-hpc:~/Downloads/netfilter-nfqueue-samples$ ./sample-helloworld 
opening library handle
unbinding existing nf_queue handler for AF_INET (if any)
error during nfq_unbind_pf()
dell@dell-hpc:~/Downloads/netfilter-nfqueue-samples$

on QEMU ARM emulation platform :

# mv /mnt/host/sample-helloworld /home/qemu/
# cd home/qemu/
# ./sample-helloworld 
opening library handle
error during nfq_open()
#

So, I test whether the socket is occupied as follows:

on actual AMD Ubuntu PC platform :

dell@dell-hpc:~/Downloads/netfilter-nfqueue-samples$ lsof -i -P -n | grep LISTEN
PM2\x20v4  2751  rog   16u  IPv4  43760      0t0  TCP 127.0.0.1:8081 (LISTEN)
soc_term  19017  rog    3u  IPv4 228170      0t0  TCP *:54321 (LISTEN)
soc_term  19018  rog    3u  IPv4 232923      0t0  TCP *:54320 (LISTEN)
qemu-syst 19021  rog   14u  IPv4 232938      0t0  TCP *:1234 (LISTEN)
qemu-syst 19021  rog   15u  IPv6 232939      0t0  TCP *:1234 (LISTEN)
dell@dell-hpc:~/Downloads/netfilter-nfqueue-samples$

no output on QEMU ARM emulation platform

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