This describes the process of setting up MPTCP on the Linux kernel.
It will be described in two models.
One is the Debian family of x86 general computers, and the other is RaspberryPi.
https://github.com/multipath-tcp/mptcp/releases
dpkg -i linux-image-xxxxx.mptcp_xxxxx_amd64.deb
GUI & ENG : https://linuxhint.com/change-grub-boot-order/
CLI & KOR : https://sandarabong.tistory.com/63