diff --git a/README.md b/README.md
index 8bb9817..90a5b57 100644
--- a/README.md
+++ b/README.md
@@ -526,7 +526,8 @@ The IP configuration supports the following options:
     [`ipv6.route-metric`](https://developer.gnome.org/NetworkManager/stable/nm-settings.html#nm-settings.property.ipv6.route-metric)
     properties, respectively. If specified, it determines the route metric for DHCP
     assigned routes and the default route, and thus the priority for multiple
-    interfaces.
+    interfaces. For `initscripts`, `route_metric4` sets the metric for the default
+    route and `route_metric6` is not supported.
 
 - `route`
 
diff --git a/library/network_connections.py b/library/network_connections.py
index 02659cc..074d79b 100644
--- a/library/network_connections.py
+++ b/library/network_connections.py
@@ -323,8 +323,6 @@ class IfcfgUtil:
 
         if ip["dhcp4_send_hostname"] is not None:
             warn_fcn("ip.dhcp4_send_hostname is not supported by initscripts provider")
-        if ip["route_metric4"] is not None and ip["route_metric4"] >= 0:
-            warn_fcn("ip.route_metric4 is not supported by initscripts provider")
         if ip["route_metric6"] is not None and ip["route_metric6"] >= 0:
             warn_fcn("ip.route_metric6 is not supported by initscripts provider")
 
@@ -516,6 +514,9 @@ class IfcfgUtil:
                 else:
                     ifcfg["DEFROUTE"] = "no"
 
+            if ip["route_metric4"] is not None and ip["route_metric4"] >= 0:
+                ifcfg["METRIC"] = str(ip["route_metric4"])
+
             route4 = []
             route6 = []
             for r in ip["route"]: