Hello Zac Morris,
I am not the maintainer and just trying to get some
more informations of the segfault.
Unfortunately I think you need to provide some more
details on your used configuration.
The line shown in dmesg about the segfault could
also be of help already.
Otherwise you could also install a core dump collector
like systemd-coredump and gdb and trigger the segfault.
Then you can inspect the created dumps by:
coredumpctl list
And show where it is really crashing by sending the
output of:
coredumpctl gdb [PID]
bt
Even better if the matching debug symbol packages
are installed like in [1], but I fear that there
is not yet such a package in stretch for dnsmasq.
Kind regards,
Bernhard
[1] https://wiki.debian.org/HowToGetABacktrace
