Hello Ray Klassen, without deeper knowledge of libreswan I tried to reproduce this issue, but it did not show up for me.
It might be possible to install the package systemd-coredump. Then in the journal should a backtrace be printed when you repeat the checkconfig, which you could forward to this bug. Additionally the backtrace would contain more function names when the matching debug symbols are installed like described in [1]. This page might give some more pointer how to retrieve more information form that issue. Kind regards, Bernhard [1] https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols
