gtp5g is a customized Linux kernel module 5G GTP-U to handle packet by PFCP IEs such as PDR and FAR. About more detail IEs, there are more information in 3GPP TS 29.281 and 3GPP TS 29.244.
Because of Linux kernel evolution, this module would not work at any version.
This module can work at version 5.0.0-23-generic
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make clean && make
sudo make install
sudo make uninstall