diff --git a/files/image_config/interfaces/interfaces.j2 b/files/image_config/interfaces/interfaces.j2
index 18e1181c71cf..b39331f459b7 100644
--- a/files/image_config/interfaces/interfaces.j2
+++ b/files/image_config/interfaces/interfaces.j2
@@ -26,7 +26,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 {% endblock loopback %}
 {% block mgmt_interface %}
 
diff --git a/src/sonic-config-engine/tests/sample_output/py2/interfaces b/src/sonic-config-engine/tests/sample_output/py2/interfaces
index a47c89258e34..90aadce5f44e 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/interfaces
+++ b/src/sonic-config-engine/tests/sample_output/py2/interfaces
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt
index c447cfbc6d34..b38c3692e992 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt
+++ b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp
index b41038fd8d67..705a5a0e2094 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp
+++ b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband
index 543819734f03..d09e9e741deb 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband
+++ b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband_ip b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband_ip
index 57bf924ce717..e76aea82618b 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband_ip
+++ b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_inband_ip
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_ip b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_ip
index 31a6d3325771..e5ad2330f3e6 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_ip
+++ b/src/sonic-config-engine/tests/sample_output/py2/interfaces_nomgmt_ztp_ip
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces b/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces
index 5777bce1837c..1c33cfe819c6 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces
+++ b/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces
@@ -19,7 +19,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces_nomgmt b/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces_nomgmt
index 04490892fe3f..8f0f45557816 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces_nomgmt
+++ b/src/sonic-config-engine/tests/sample_output/py2/mvrf_interfaces_nomgmt
@@ -19,7 +19,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py2/two_mgmt_interfaces b/src/sonic-config-engine/tests/sample_output/py2/two_mgmt_interfaces
index ce3961f1a786..319f25c4e91a 100644
--- a/src/sonic-config-engine/tests/sample_output/py2/two_mgmt_interfaces
+++ b/src/sonic-config-engine/tests/sample_output/py2/two_mgmt_interfaces
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth1
diff --git a/src/sonic-config-engine/tests/sample_output/py3/interfaces b/src/sonic-config-engine/tests/sample_output/py3/interfaces
index a47c89258e34..90aadce5f44e 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/interfaces
+++ b/src/sonic-config-engine/tests/sample_output/py3/interfaces
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt
index c447cfbc6d34..b38c3692e992 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt
+++ b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp
index b41038fd8d67..705a5a0e2094 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp
+++ b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband
index 543819734f03..d09e9e741deb 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband
+++ b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband_ip b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband_ip
index 57bf924ce717..e76aea82618b 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband_ip
+++ b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_inband_ip
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_ip b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_ip
index 31a6d3325771..e5ad2330f3e6 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_ip
+++ b/src/sonic-config-engine/tests/sample_output/py3/interfaces_nomgmt_ztp_ip
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces b/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces
index 5777bce1837c..1c33cfe819c6 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces
+++ b/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces
@@ -19,7 +19,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces_nomgmt b/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces_nomgmt
index 04490892fe3f..8f0f45557816 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces_nomgmt
+++ b/src/sonic-config-engine/tests/sample_output/py3/mvrf_interfaces_nomgmt
@@ -19,7 +19,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0
diff --git a/src/sonic-config-engine/tests/sample_output/py3/two_mgmt_interfaces b/src/sonic-config-engine/tests/sample_output/py3/two_mgmt_interfaces
index 5e2680854cec..490a27366fd3 100644
--- a/src/sonic-config-engine/tests/sample_output/py3/two_mgmt_interfaces
+++ b/src/sonic-config-engine/tests/sample_output/py3/two_mgmt_interfaces
@@ -10,7 +10,7 @@ iface lo inet loopback
    netmask 255.255.0.0
    scope host
    post-up ip addr del 127.0.0.1/8 dev lo
-   down ip addr add 127.0.0.1/8 dev lo
+   pre-down ip addr add 127.0.0.1/8 dev lo
 
 # The management network interface
 auto eth0