diff -Nru bind9-9.16.15/debian/bind9.postinst bind9-9.16.15/debian/bind9.postinst
--- bind9-9.16.15/debian/bind9.postinst	2021-12-01 13:06:43.000000000 -0300
+++ bind9-9.16.15/debian/bind9.postinst	2021-12-09 11:18:09.000000000 -0300
@@ -30,6 +30,10 @@
 	chmod g+r /etc/bind/rndc.key /etc/bind/named.conf* || true
 	chmod g+rwx /var/cache/bind
     fi
+
+	# Configuration file sanity check. This should avoid the upgrade process to
+	# stop a running service when starting it after the upgrade would fail
+	/usr/sbin/named-checkconf /etc/bind/named.conf
 fi
 
 #DEBHELPER#
diff -Nru bind9-9.16.15/debian/changelog bind9-9.16.15/debian/changelog
--- bind9-9.16.15/debian/changelog	2021-12-01 13:06:43.000000000 -0300
+++ bind9-9.16.15/debian/changelog	2021-12-09 11:18:19.000000000 -0300
@@ -1,3 +1,9 @@
+bind9 (1:9.16.15-1ubuntu4~ppa1) jammy; urgency=medium
+
+  * d/bind9.postinst: Perform config sanity check. (LP: #1492212)
+
+ -- Athos Ribeiro <athos.ribeiro@canonical.com>  Thu, 09 Dec 2021 11:18:19 -0300
+
 bind9 (1:9.16.15-1ubuntu3) jammy; urgency=medium
 
   * No-change rebuild against openssl3