diff --git a/scripts/upgrade b/scripts/upgrade
index e35f752..555b7ba 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -147,9 +147,11 @@ systemctl restart dnsmasq
 
 ynh_store_file_checksum --file="/etc/dnsmasq.d/$app"
 
+# get IPv4 for the AGH config file
 ipv4_route_output=$(echo "$(ip -4 route get 1.2.3.4 2> /dev/null)" | head -n1 | head -n1)
 ipv4_addr=$(process_ips "$ipv4_route_output")
 
+# get IPv6 for the AGH config file
 ipv6_route_output=$(echo "$(ip -6 route get ::1.2.3.4 2> /dev/null)" | head -n1)
 ipv6_addr=$(process_ips "$ipv6_route_output")