Remove slash from ipv4 address

doc/EN/usage.org

@@ -704,9 +704,9 @@ You can block ads for any devices connected to your local network by installing
 
 ** Set a static IP address
 
-Once you've done that then ensure that your system has a static local IP address (typically 192.168..) using the option on the control panel. You will also need to know the IP address of your internet router, which is usually *192.168.1.1* or *192.168.1.254*.
+Ensure that your system has a static local IP address (typically 192.168..) using the option on the control panel. You will also need to know the IP address of your internet router, which is usually *192.168.1.1* or *192.168.1.254*.
 
-When that's done select *About this system* from the control panel and see the IPv4 address (ignore the /24 part). You can use this as a DNS address in two ways:
+When that's done select *About this system* from the control panel and see the IPv4 address. You can use this as a DNS address in two ways:
 
 ** On each client system within your local network
 

src/freedombone-utils-network

@@ -89,7 +89,7 @@ function install_static_network {
 
 function get_ipv4_address {
     IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
-    echo $(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}')
+    echo $(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}' | awk -F '/' '{print $1}')
 }
 
 function get_ipv6_address {