diff --git a/testcases/network/stress/interface/if-addr-adddel b/testcases/network/stress/interface/if-addr-adddel
index 3b1ab50..4a0501e 100644
--- a/testcases/network/stress/interface/if-addr-adddel
+++ b/testcases/network/stress/interface/if-addr-adddel
@@ -21,11 +21,11 @@
 
 TST_CLEANUP="netstress_cleanup"
 
+. test_net_stress.sh
+
 # The interval of the check interface activity
 CHECK_INTERVAL=${CHECK_INTERVAL:-$(($NS_TIMES / 20))}
 
-. test_net_stress.sh
-
 test_body()
 {
 	local cmd_type=$1
diff --git a/testcases/network/stress/interface/if-addr-addlarge b/testcases/network/stress/interface/if-addr-addlarge
index c3cdb8f..a81cf61 100644
--- a/testcases/network/stress/interface/if-addr-addlarge
+++ b/testcases/network/stress/interface/if-addr-addlarge
@@ -21,11 +21,11 @@
 
 TST_CLEANUP="netstress_cleanup"
 
+. test_net_stress.sh
+
 # The interval of the check interface activity
 CHECK_INTERVAL=${CHECK_INTERVAL:-$(($IP_TOTAL / 20))}
 
-. test_net_stress.sh
-
 test_body()
 {
 	local cmd_type=$1
diff --git a/testcases/network/stress/interface/if-mtu-change b/testcases/network/stress/interface/if-mtu-change
index 3658f69..15293c4 100644
--- a/testcases/network/stress/interface/if-mtu-change
+++ b/testcases/network/stress/interface/if-mtu-change
@@ -21,11 +21,11 @@
 
 TST_CLEANUP="do_cleanup"
 
+. test_net_stress.sh
+
 # The interval of the mtu change [second]
 CHANGE_INTERVAL=${CHANGE_INTERVAL:-5}
 
-. test_net_stress.sh
-
 # The array of the value which MTU is changed into sequentially
 # 552 - net.ipv4.route.min_pmtu
 CHANGE_VALUES="784 1142 552 1500 552 1500 552 748 552 1142 1500"
diff --git a/testcases/network/stress/interface/if-route-adddel b/testcases/network/stress/interface/if-route-adddel
index 64366fc..8c1dfee 100644
--- a/testcases/network/stress/interface/if-route-adddel
+++ b/testcases/network/stress/interface/if-route-adddel
@@ -21,10 +21,10 @@
 
 TST_CLEANUP="netstress_cleanup"
 
-CHECK_INTERVAL=${CHECK_INTERVAL:-$(($NS_TIMES / 20))}
-
 . test_net_stress.sh
 
+CHECK_INTERVAL=${CHECK_INTERVAL:-$(($NS_TIMES / 20))}
+
 test_body()
 {
 	local cmd_type=$1
diff --git a/testcases/network/stress/interface/if-route-addlarge b/testcases/network/stress/interface/if-route-addlarge
index b7e6952..eee0959 100644
--- a/testcases/network/stress/interface/if-route-addlarge
+++ b/testcases/network/stress/interface/if-route-addlarge
@@ -21,10 +21,10 @@
 
 TST_CLEANUP="netstress_cleanup"
 
-CHECK_INTERVAL=${CHECK_INTERVAL:-$(($ROUTE_TOTAL / 20))}
-
 . test_net_stress.sh
 
+CHECK_INTERVAL=${CHECK_INTERVAL:-$(($ROUTE_TOTAL / 20))}
+
 test_body()
 {
 	local cmd_type=$1
diff --git a/testcases/network/stress/interface/if-updown b/testcases/network/stress/interface/if-updown
index 5ab54a1..264331a 100644
--- a/testcases/network/stress/interface/if-updown
+++ b/testcases/network/stress/interface/if-updown
@@ -21,10 +21,10 @@
 
 TST_CLEANUP="netstress_cleanup"
 
-CHECK_INTERVAL=${CHECK_INTERVAL:-$(($IF_UPDOWN_TIMES / 20))}
-
 . test_net_stress.sh
 
+CHECK_INTERVAL=${CHECK_INTERVAL:-$(($IF_UPDOWN_TIMES / 20))}
+
 test_body()
 {
 	local cmd_type=$1