I have a simple SVG file containing only a few circular shapes, which I
am attempting to export as DXF as part of a CNC milling process.
Inkscape creates a DXF file containing many thousands of tiny entities
for this, far more than would be required to actually represent the
shapes. This causes dxf2gcode to get upset trying to load it.
(see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=895865 )
I suspect what may be happening is it has far too small a tolerance for
how to cut paths up.
Attached is both the .svg source and the exported .dxf