Oh please, even the author of the CDDL license states that this is so (Danese Cooper).<p>And it&#x27;s not as if that admission was ever needed, were you even around back then ?<p>Solaris was being killed in the market by Linux, Sun decided to go open source in an effort to better compete with Linux, but there was NO way that they would give away their prized technology (ZFS, DTrace) under a license which would allow their main competitor to whom they were losing, to integrate said technology.<p>Hence CDDL, GPLv2 incompatible.