File list of package libgtp-dev in bullseye of architecture arm64
/usr/include/gtp.h /usr/include/gtpie.h /usr/include/pdp.h /usr/lib/aarch64-linux-gnu/libgtp.a /usr/lib/aarch64-linux-gnu/libgtp.so /usr/lib/aarch64-linux-gnu/pkgconfig/libgtp.pc /usr/share/doc/libgtp-dev/changelog.Debian.gz /usr/share/doc/libgtp-dev/copyright