diff --git a/xCAT-test/autotest/testcase/confignetwork/cases0 b/xCAT-test/autotest/testcase/confignetwork/cases0
index 4615c4555..f0a9f3e28 100644
--- a/xCAT-test/autotest/testcase/confignetwork/cases0
+++ b/xCAT-test/autotest/testcase/confignetwork/cases0
@@ -151,6 +151,7 @@ start:confignetwork_s_installnic_secondarynic_updatenode
 description: this case is to test confignetwork -s could configure installnic and secondarynic successfully with updatenode.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/;cp -f /etc/network/interfaces /tmp";else echo "Sorry,this is not supported os"; fi
@@ -181,6 +182,7 @@ start:confignetwork_secondarynic_updatenode
 description: this case is to test confignetwork could configure secondarynic successfully with updatenode.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
@@ -209,6 +211,7 @@ start: confignetwork_secondarynic_nicaliases_updatenode
 description: this case is to test confignetwork could config secondarynic nicaliases successfully with updatenode.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
@@ -250,6 +253,7 @@ start:confignetwork_secondarynic_nicextraparams_updatenode
 description: this case is to test confignetwork could configure secondarynic nicextraparams successfully with updatenode.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
@@ -408,6 +412,7 @@ start:confignetwork_secondarynic_thirdnic_multiplevalue_updatenode
 description:this case is to verify if confignetwork could config serveral nics' multiple value at the same time.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
@@ -466,9 +471,11 @@ start:confignetwork_vlan_eth0
 description: this case is to verify if confignetwork could config vlan for CN.When CN has Ethernet nic eth0, user wants to confgure 2 vlans, Configure vlan eth0.6 60.5.106.9 and eth0.7 70.5.106.9 based on ethernet nic eth0 
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
@@ -514,9 +521,11 @@ start:confignetwork_vlan_false
 description:this case is to verify if confignetwork could process the false value when vlan nicdevice is not correctly set
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC mtu=1500
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
@@ -556,20 +565,22 @@ start:confignetwork_bond_eth2_eth3
 description: this case is to verify if confignetwork could config bond for CN.CN has 2 Ethernet nics, eth2 and eth3, user configures bond bond0 using ethernet nic eth2 and eth3.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0 
 check:rc==0
@@ -608,20 +619,22 @@ start:confignetwork_bond_false
 description: this case is to verify if confignetwork could process when bond is not correctly set.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0
 check:rc==0
@@ -652,20 +665,22 @@ start:confignetwork_vlan_bond
 description: this case is to verify if confignetwork could config bond for CN.CN has 2 Ethernet nic eth2 and eth3, user wants to bond them to bond0, then make 2 vlan bond0.2 and bond0.3 for data network. 
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC mtu=1500
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC mtu=1500
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0 mtu=1500
 check:rc==0
@@ -713,20 +728,22 @@ start:confignetwork_2eth_bridge_br0
 description:this case is to verify if confignetwork could config bridge for CN.CN has 2 Ethernet nics eth2 and eth3, user want to configure bond bond0 using eth2 and eth3, creates bridge br0 based on bond0.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0
 check:rc==0
@@ -763,20 +780,22 @@ start:confignetwork_2eth_bridge_br22_br33
 description:this case is to verify if confignetwork could config bridge for CN.CN has 2 Ethernet nics eth2 and eth3, user wants to bond them as bond0, then make vlan bond0.2 and bond0.3, using bond0.2 create bridge br22,using bond0.3 create bridge br33. Use confignetwork to configure bond bond0, create vlan bond0.2 and bond0.3, create bridge br22 and br33.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0
 check:rc==0
@@ -825,20 +844,22 @@ start:confignetwork_installnic_2eth_bridge_br22_br33
 description:this case is to test if confignetwork could config installnic and 2 bridges at the same time
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0
 check:rc==0
@@ -891,20 +912,22 @@ start:confignetwork__bridge_false
 description:this case is to test if confignetwork could process false value when the bridge is not correctly set.
 cmd:lsdef $$CN;if [ $? -eq 0 ]; then lsdef -l $$CN -z >/tmp/CN.standa ;fi
 check:rc==0
+cmd:xdsh $$CN "rm -rf /tmp/backupnet/"
 cmd:xdsh $$CN "mkdir -p /tmp/backupnet/"
 check:rc==0
 cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep "Red Hat" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
+cmd:if grep "Red Hat" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$SECONDNIC
 check:rc==0
 cmd:chdef $$CN nicips.$$SECONDNIC=11.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$SECONDNIC=11_1_0_0-255_255_0_0
 check:rc==0
 cmd:mkdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0 mgtifname=$$THIRDNIC
 check:rc==0
-cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$SECONDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
+cmd:chdef $$CN nicips.$$THIRDNIC=12.1.0.100 nictypes.$$THIRDNIC=Ethernet nicnetworks.$$THIRDNIC=12_1_0_0-255_255_0_0
 check:rc==0
 cmd:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$SECONDNIC= nicnetworks.$$THIRDNIC=
+cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC= nicips.$$THIRDNIC= nictypes.$$THIRDNIC= nicnetworks.$$THIRDNIC=
 check:rc==0
 cmd:mkdef -t network -o 30_5_0_0-255_255_0_0 net=30.5.0.0 mask=255.255.0.0
 check:rc==0