diff --git a/xCAT-test/autotest/testcase/confignetwork/cases0 b/xCAT-test/autotest/testcase/confignetwork/cases0
index 784f730a9..b57d9f146 100644
--- a/xCAT-test/autotest/testcase/confignetwork/cases0
+++ b/xCAT-test/autotest/testcase/confignetwork/cases0
@@ -543,15 +543,14 @@ 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 $$CN "cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/"; elif grep -E "Red Hat|CentOS" /etc/*release;then xdsh $$CN "cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /etc/network/interfaces.d/* /tmp/backupnet/";else echo "Sorry,this is not supported os"; fi
-cmd:if grep -E "Red Hat|CentOS" /etc/*release;then xdsh $$CN "yum -y install bridge-utils";fi
+cmd:xdsh $$CN "if grep SUSE /etc/*release;then cp -f /etc/sysconfig/network/ifcfg-* /tmp/backupnet/; elif grep -E \"Red Hat|CentOS\" /etc/*release;then cp -f /etc/sysconfig/network-scripts/ifcfg-* /tmp/backupnet/; elif grep Ubuntu /etc/*release;then cp -f /etc/network/interfaces.d/* /tmp/backupnet/;else echo \"Sorry,this is not supported os\"; fi"
 cmd:mkdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0 mgtifname=$$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:updatenode $$CN -P confignetwork
 check:rc==0
-cmd:if grep SUSE /etc/*release;then xdsh $$CN "grep 11.1.0.100 /etc/sysconfig/network/ifcfg-$$SECONDNIC"; elif grep -E "Red Hat|CentOS" /etc/*release;then xdsh $$CN  "grep 11.1.0.100 /etc/sysconfig/network-scripts/ifcfg-$$SECONDNIC"; elif grep Ubuntu /etc/*release;then xdsh $$CN "grep 11.1.0.100 /etc/network/interfaces.d/$$SECONDNIC";else echo "Sorry,this is not supported os"; fi
+cmd:xdsh $$CN "if grep SUSE /etc/*release;then grep 11.1.0.100 /etc/sysconfig/network/ifcfg-$$SECONDNIC; elif grep -E \"Red Hat|CentOS\" /etc/*release;then grep 11.1.0.100 /etc/sysconfig/network-scripts/ifcfg-*$$SECONDNIC; elif grep Ubuntu /etc/*release;then grep 11.1.0.100 /etc/network/interfaces.d/$$SECONDNIC;else echo \"Sorry,this is not supported os\"; fi"
 check:output=~11.1.0.100
 cmd:chdef $$CN nicips.$$SECONDNIC= nictypes.$$SECONDNIC= nicnetworks.$$SECONDNIC=
 check:rc==0
@@ -570,11 +569,11 @@ cmd:rmdef -t network -o 11_1_0_0-255_255_0_0
 cmd:rmdef -t network -o 60_0_0_0-255_0_0_0
 cmd:rmdef -t network -o 70_0_0_0-255_0_0_0
 cmd:xdsh $$CN "ip addr del 11.1.0.100/16 dev $$SECONDNIC"
-cmd:if grep SUSE /etc/*release;then xdsh $$CN "rm -rf /etc/sysconfig/network/ifcfg-$$SECONDNIC"; elif grep -E "Red Hat|CentOS" /etc/*release;then xdsh $$CN "rm -rf /etc/sysconfig/network-scripts/ifcfg-$$SECONDNIC"; elif grep Ubuntu /etc/*release;then xdsh $$CN "rm -rf /etc/network/interfaces.d/$$SECONDNIC";else echo "Sorry,this is not supported os"; fi
+cmd:xdsh $$CN "if grep SUSE /etc/*release;then rm -rf /etc/sysconfig/network/ifcfg-$$SECONDNIC; elif grep -E \"Red Hat .* 8.*|CentOS .* 8.*\" /etc/*release; then echo "Do Nothing";elif grep -E \"Red Hat|CentOS\" /etc/*release;then rm -rf /etc/sysconfig/network-scripts/ifcfg-$$SECONDNIC; elif grep Ubuntu /etc/*release;then rm -rf /etc/network/interfaces.d/$$SECONDNIC;else echo \"Sorry,this is not supported os\"; fi"
 check:rc==0
 cmd:if [ -e /tmp/CN.standa ]; then rmdef $$CN; cat /tmp/CN.standa | mkdef -z; rm -rf /tmp/CN.standa; fi
 check:rc==0
-cmd:if grep SUSE /etc/*release;then xdsh $$CN "cp -f /tmp/backupnet/* /etc/sysconfig/network/"; elif grep -E "Red Hat|CentOS" /etc/*release;then xdsh $$CN "cp -f /tmp/backupnet/* /etc/sysconfig/network-scripts/"; elif grep Ubuntu /etc/*release;then xdsh $$CN "cp -f /tmp/backupnet/* /etc/network/interfaces.d/;cp -f /tmp/interfaces /etc/network/";else echo "Sorry,this is not supported os"; fi
+cmd:xdsh $$CN "if grep SUSE /etc/*release;then cp -f /tmp/backupnet/* /etc/sysconfig/network/; elif grep -E \"Red Hat .* 8.*|CentOS .* 8.*\" /etc/*release; then rm -fr /etc/sysconfig/network-scripts/*; cp -f /tmp/backupnet/* /etc/sysconfig/network-scripts/; nmcli con reload;elif grep -E \"Red Hat|CentOS\" /etc/*release;then cp -f /tmp/backupnet/* /etc/sysconfig/network-scripts/; elif grep Ubuntu /etc/*release;then cp -f /tmp/backupnet/* /etc/network/interfaces.d/;cp -f /tmp/interfaces /etc/network/;else echo \"Sorry,this is not supported os\"; fi"
 check:rc==0
 cmd:xdsh $$CN "rm -rf /tmp/backupnet/ /tmp/interfaces"
 check:rc==0