Description of problem:
network-scripts 10.13 Update changed the handling of routes from a route-<interface> file. Now any route coming from such a file triggers the ip route add
Error: any valid prefix is expected rather than "..."

Reason is, that the ip route add command in ifup-routes handle_file function
now encloses the $line variable in double quotes. In v10.11 the route was
added without them. The ip command now interpretes the complete route as
it's first command line parameter, which is incorrect

Here are the problematic changes:
--- ifup-routes.R       2021-08-27 09:55:06.000000000 +0200
+++ ifup-routes 2022-01-13 09:08:43.000000000 +0100
@@ -2,6 +2,8 @@
 #
 # adds static routes which go through device $1

+. /etc/sysconfig/network-scripts/network-functions
+
 if [ -z "$1" ]; then
     echo $"usage: ifup-routes <net-device> [<nickname>]"
     exit 1
@@ -19,7 +21,12 @@
             line="$line via $(eval echo '$'GATEWAY$routenum)"
         fi
         line="$line dev $2"
-        /sbin/ip route add $line
+
+        /sbin/ip route add "$line" || {
+            net_log $"Failed to add route ${line}, using ip route replace instead." warning
+            /sbin/ip route replace "$line"
+        }
+
         routenum=$(($routenum+1))
     done
 }
@@ -34,7 +41,10 @@
     fi
     { cat "$file" ; echo ; } | while read line; do
         if [[ ! "$line" =~ $MATCH ]]; then
-            /sbin/ip $proto $type add $line
+            /sbin/ip $proto "$type" add "$line" || {
+                net_log $"Failed to add ${type} ${line}, using ip ${type} replace instead." warning
+                /sbin/ip $proto "$type" replace "$line"
+            }
         fi
     done
 }

Version-Release number of selected component (if applicable):
network-scripts 10.13

How reproducible:
ifup-routes <interface>

Steps to Reproduce:
1. add routes via ifup-routes
2. or restart system
3.

Actual results:
No static routes are added at all.

Expected results:
Static routes are added.

Additional info: