diff -Nru resolvconf-1.78ubuntu5~ppa0/debian/changelog resolvconf-1.78ubuntu5~ppa1/debian/changelog
--- resolvconf-1.78ubuntu5~ppa0/debian/changelog	2017-09-25 03:54:29.000000000 +0000
+++ resolvconf-1.78ubuntu5~ppa1/debian/changelog	2017-09-25 03:54:29.000000000 +0000
@@ -1,4 +1,4 @@
-resolvconf (1.78ubuntu5~ppa0) xenial; urgency=medium
+resolvconf (1.78ubuntu5~ppa1) xenial; urgency=medium
 
   * support reading dns information written by initramfs. (LP: #1711760)
 
diff -Nru resolvconf-1.78ubuntu5~ppa0/lib/net-interface-handler resolvconf-1.78ubuntu5~ppa1/lib/net-interface-handler
--- resolvconf-1.78ubuntu5~ppa0/lib/net-interface-handler	2017-09-25 03:54:29.000000000 +0000
+++ resolvconf-1.78ubuntu5~ppa1/lib/net-interface-handler	2017-09-25 03:54:29.000000000 +0000
@@ -109,7 +109,7 @@
     if [ -z "$rconf" ]; then
         debug "no search or nameservers found in $*"
     fi
-    if [ "$rconf" = "-" ]; then
+    if [ "$output" = "-" ]; then
         echo -n "$rconf"
     else
         echo -n "$rconf" > "$output"
@@ -122,14 +122,14 @@
     assert_environment || return
     should_be_enabled || return 0
 
-    local dev="$INTERFACE" i="" rconf=""
+    local iface="$INTERFACE" i="" rconf=""
     set --
-    for i in "/run/net-$dev.conf" "/run/net6-$dev.conf"; do
+    for i in "/run/net-$iface.conf" "/run/net6-$iface.conf"; do
         [ -f "$i" ] || continue
         set -- "$@" "$i"
     done
     if [ $# -eq 0 ]; then
-        debug "no /run/net*-$dev.conf files found."
+        debug "no /run/net*-$iface.conf files found."
         return 0
     fi