Package: fai-client Version: 6.0.3+deb12u1 Since e0d7b49 (first appeared in bookworm) fcopy tests for broken symlinks. However this change breaks relative symlinks because of class semantics (/foo/bar/DEFAULT -> ../etc means /foo/bar should be a symlink relative to bar, not to DEFAULT in the target tree). Also during installation, absolute symlinks pointing to files absent in the installer will be ignored by fcopy.
e0d7b49 was a fix for #985303. I'm not sure what the correct behaviour would be for that, since we don't use substitutions.

