FWIW, CDDL is pretty much just Mozilla license. The incompatibility is caused by GPL, which, according to FSF, cannot be linked against anything that's not a s

FWIW, CDDL is pretty much just Mozilla license. The incompatibility is caused by GPL, which, according to FSF, cannot be linked against anything that's not a subset of GPL. You'd get the same incompatibility if ZFS was covered by GPLv3, for example.