I found a bugΒΆ
The components support generating debug logs:
Build nfsdk/nfproxy with debug log support:
cd nfsdk/nfproxy
make clean
make LOGS=1
Build your project with the updated library.
Start your filtering application and reproduce the issue.
The debug log is saved to nfproxylog.txt in the same folder as the executable. Send it with a description of the issue to support@netfiltersdk.com.