Comment 3 for bug 1492212

I did submit a patch (attached) upstream at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=995310

The proposal is available in a PPA at

https://launchpad.net/~athos-ribeiro/+archive/ubuntu/bind9-validate-config/+packages

The idea is to run a simple configuration validation before the systemd debhelper hooks run in the postinst script. In case the validation fails, the service will not be restarted and the upgrade will stay in a config failed state. Thoughts?

Note that I did not craete an MP for the git Ubuntu repository yet, since this patch is a draft to start a discussion around the issue. Moreover, it would be nice to hear the thoughts of the Debian maintainer before we proceed with this one.