diff --git a/examples/var_service/dhcp_if/convert2ipconf b/examples/var_service/dhcp_if/convert2ipconf
index 31e3c7f..98f6546 100755
--- a/examples/var_service/dhcp_if/convert2ipconf
+++ b/examples/var_service/dhcp_if/convert2ipconf
@@ -19,7 +19,7 @@
 #let cfg=cfg+1
 #if[$cfg]=...; ip[$cfg]=...; ipmask[$cfg]=.../...; gw[$cfg]=...; net[$cfg]=... dns[$cfg]=...
 
-exec >/dev/null
+#exec >/dev/null
 #exec >"$0.out"  # debug
 exec 2>&1
 
@@ -31,23 +31,31 @@
 if ! test "$mask"; then
 	case "$ip" in
 	10.*)
+		echo "mask assumed 8 for ip=$ip"
 		mask=8;;
-	192.168.*)
-		mask=16;;
 	#172.16-31.x.x
 	172.1[6789].*)
+		echo "mask assumed 12 for ip=$ip"
 		mask=12;;
 	172.2[0123456789].*)
+		echo "mask assumed 12 for ip=$ip"
 		mask=12;;
 	172.3[01].*)
+		echo "mask assumed 12 for ip=$ip"
 		mask=12;;
+	192.168.*)
+		echo "mask assumed 16 for ip=$ip"
+		mask=16;;
 	esac
 fi
 
 # some servers do not return router option.
 # assume DHCP server is the router.
 if ! test "$router"; then
-	test "$serverid" && router="$serverid"
+	if test "$serverid"; then
+		router="$serverid"
+		echo "No 'router' from the server, assuming 'serverid' is the router: $serverid"
+	fi
 fi
 
 {
diff --git a/examples/var_service/dhcp_if/convert2ntpconf b/examples/var_service/dhcp_if/convert2ntpconf
index e9d8293..f51740b 100755
--- a/examples/var_service/dhcp_if/convert2ntpconf
+++ b/examples/var_service/dhcp_if/convert2ntpconf
@@ -19,7 +19,7 @@
 #let cfg=cfg+1
 #ntpip[$cfg]=...
 
-exec >/dev/null
+#exec >/dev/null
 #exec >"$0.out"  # debug
 exec 2>&1
 
diff --git a/examples/var_service/dhcp_if/dhcp_handler b/examples/var_service/dhcp_if/dhcp_handler
index 6a97e85..3e65262 100755
--- a/examples/var_service/dhcp_if/dhcp_handler
+++ b/examples/var_service/dhcp_if/dhcp_handler
@@ -38,12 +38,10 @@
 dir_ipconf="/var/run/service/fw"
 dir_ntpconf="/var/run/service/ntpd"
 
-exec >/dev/null
-#exec >>"$0.out"  #debug
+#exec >/dev/null
+#exec >"$0.out"  #debug
 exec 2>&1
 
-echo "`date`: Params: $*"
-
 if test x"$1" != x"bound" && test x"$1" != x"renew" ; then
 	# Reconfigure network with this interface disabled
 	echo "Deconfiguring"
diff --git a/examples/var_service/dhcp_if/finish b/examples/var_service/dhcp_if/finish
index 8ce1883..50bfe67 100755
--- a/examples/var_service/dhcp_if/finish
+++ b/examples/var_service/dhcp_if/finish
@@ -1,5 +1,5 @@
 #!/bin/sh
-# executed when service is taken down ("sv d .")
+# executed when service is taken down ("svc -d .")
 
 service=${PWD##*/}
 file_ipconf="$service.ipconf"