We currently include only 2 components of the upstream kernel version in our kernel version string (i.e. what 'uname -r' prints). Every change to this string currently requires rebuild and reinstallation of OOT modules, and we don't want or need to do that for every stable update.
However, there is still plenty of software out there that assumes there are at least 3 dotted components at the beginning of the kernel version string (e.g. <https://bugs.debian.org/742226>). It is sometimes possible to work around this, as I pointed out on that bug report, but it would not be at all obvious to the average user that that failure was caused by a broken version check. Linus continues to include a third component of '0' in his releases and I don't think any other major distribution overrides this (excluding downstreams that use our linux package). Which means this is only a Debian problem, not a Linux problem, and there is little pressure for ISVs to fix their version checks. Therefore I propose to restore the third component as '0' for compatibility, the same as we did in wheezy. Ben. -- Ben Hutchings Humans are not rational beings; they are rationalising beings.
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