diff --git a/src/sonic-config-engine/minigraph.py b/src/sonic-config-engine/minigraph.py
index 632cf060b626..1fd6b7b56e8d 100644
--- a/src/sonic-config-engine/minigraph.py
+++ b/src/sonic-config-engine/minigraph.py
@@ -1505,7 +1505,12 @@ def get_mux_cable_entries(mux_cable_ports, neighbors, devices):
             entry = {}
             neighbor = neighbors[intf]['name']
             entry['state'] = 'auto'
-            entry['server_ipv4'] = devices[neighbor]['lo_addr']
+
+            # Always force a /32 prefix for server IPv4 loopbacks
+            server_ipv4_lo_addr = devices[neighbor]['lo_addr'].split("/")[0]
+            server_ipv4_lo_prefix = ipaddress.ip_network(UNICODE_TYPE(server_ipv4_lo_addr))
+            entry['server_ipv4'] = str(server_ipv4_lo_prefix)
+
             if 'lo_addr_v6' in devices[neighbor]:
                 entry['server_ipv6'] = devices[neighbor]['lo_addr_v6']
             mux_cable_table[intf] = entry