Merge pull request #1 from sempSONiC2/sempSONiC2-patch-1

Update cli.py

Author: sempSONiC2

utilities_common/cli.py

@@ -217,6 +217,11 @@ def ipaddress_type(val):
 
     return ip_version.version
 
+def is_ipv4addr_loopback(ipaddr):
+    if ipaddress.ip_network("127.0.0.0/8", False).overlaps(ipaddress.ip_network(ipaddr, False)):
+        return True
+    return False
+
 def is_ip_prefix_in_key(key):
     '''
     Function to check if IP address is present in the key. If it