diff -Nru minissdpd-1.5.20180223/debian/changelog minissdpd-1.5.20180223/debian/changelog
--- minissdpd-1.5.20180223/debian/changelog	2019-01-08 07:17:35.000000000 +0000
+++ minissdpd-1.5.20180223/debian/changelog	2019-02-12 10:19:29.000000000 +0000
@@ -1,3 +1,10 @@
+minissdpd (1.5.20180223-6) unstable; urgency=medium
+
+  * debian/minissdpd.config: do not use /sbin/ifconfig if it's not available.
+    Fallback to reading /proc/net/route if we can read it. (Closes: #921736).
+
+ -- Thomas Goirand <zigo@debian.org>  Tue, 12 Feb 2019 11:19:29 +0100
+
 minissdpd (1.5.20180223-5) unstable; urgency=medium
 
   * Update debconf questions (Closes: #908586).
diff -Nru minissdpd-1.5.20180223/debian/minissdpd.config minissdpd-1.5.20180223/debian/minissdpd.config
--- minissdpd-1.5.20180223/debian/minissdpd.config	2019-01-08 07:17:35.000000000 +0000
+++ minissdpd-1.5.20180223/debian/minissdpd.config	2019-02-12 10:19:29.000000000 +0000
@@ -44,7 +44,13 @@
 
 if [ -z "${MiniSSDPd_INTERFACE_ADDRESS}" ] ; then
 	# If no interface is defined, try to find one automatically
-	MiniSSDPd_INTERFACE_ADDRESS=$(LC_ALL=C /sbin/ifconfig | grep 'UP,BROADCAST' | cut -d: -f1 | tr '\n' ' ' | sed 's/ *$//')
+	if [ -x /sbin/ifconfig ] ; then
+		MiniSSDPd_INTERFACE_ADDRESS=$(LC_ALL=C /sbin/ifconfig | grep 'UP,BROADCAST' | cut -d: -f1 | tr '\n' ' ' | sed 's/ *$//')
+	else
+		if [ -r /proc/net/route ] ; then
+			awk '{ print $1 }' /proc/net/route | grep -v Iface | sort -u | tr '\n' ' '
+		fi
+	fi
 fi
 
 db_set minissdpd/listen "${MiniSSDPd_INTERFACE_ADDRESS}"