diff --git a/include/functions b/include/functions
index b013555..07ffaa4 100644
--- a/include/functions
+++ b/include/functions
@@ -145,9 +145,18 @@ function apply_ipv4_hack {
 			#						I have things going through specific wires for a reason.  This fixes
 			#						that and makes it behave as expected.
 			display_c PURPLE " MULTI-NIC-ARP-LOCK"
+			PROC_NET_IPV4="/proc/sys/net/ipv4/conf"
 			for i in default all; do
-				echo "1" > /proc/sys/net/ipv4/conf/$i/arp_ignore
-				echo "2" > /proc/sys/net/ipv4/conf/$i/arp_announce
+				if [ -w ${PROC_NET_IPV4}/$i/arp_ignore ]; then
+					echo "1" > ${PROC_NET_IPV4}/$i/arp_ignore
+				else
+					display_c RED "\nError: Could not write to ${PROC_NET_IPV4}/$i/arp_ignore"
+				fi
+				if [ -w ${PROC_NET_IPV4}/$i/arp_announce ]; then
+					echo "2" > ${PROC_NET_IPV4}/$i/arp_announce
+				else
+					display_c RED "\nError: Could not write to ${PROC_NET_IPV4}/$i/arp_announce"
+				fi
 			done
 		;;
 		esac