prefill dns settings from nat and ipv6 prefix

scripts/config

@@ -93,13 +93,20 @@ EOF
 }
 
 get__dns() {
-    ip6_dns=$(ynh_app_setting_get $app ip6_dns | tr -d '[' | tr -d ']')
+    ip6_dns=$(ynh_app_setting_get $app ip6_dns | tr -d '[]')
     ip4_dns=$(ynh_app_setting_get $app ip4_dns)
-    
+
+    if [[ -n ${ip6_net} ]] && [[ -z ${ip6_dns} ]]; then
+        ip6_dns="${ip6_net}1"
+    fi
+
+    if [[ -n ${ip4_nat_prefix} ]] && [[ -z ${ip4_dns} ]]; then
+        ip4_dns="${ip4_nat_prefix}.1"
+    fi
+
     echo "value: ${ip4_dns},${ip6_dns}"
 }
 
-
 #=================================================
 # SPECIFIC VALIDATORS FOR TOML SHORT KEYS
 #=================================================
@@ -154,6 +161,14 @@ set__dns() {
     ip6_dns="${ip6_dns%%,}"
     ip4_dns="${ip4_dns%%,}"
 
+    if [[ -n ${ip6_net} ]] && [[ -z ${ip6_dns} ]]; then
+        ip6_dns="${ip6_net}1"
+    fi
+
+    if [[ -n ${ip4_nat_prefix} ]] && [[ -z ${ip4_dns} ]]; then
+        ip4_dns="${ip4_nat_prefix}.1"
+    fi
+    
     ynh_app_setting_set $app ip6_dns "${ip6_dns}"
     ynh_app_setting_set $app ip4_dns "${ip4_dns}"
 }

scripts/install

@@ -117,14 +117,15 @@ ynh_system_user_create --username=$app
 #=================================================
 ynh_script_progression --message="Configuring hotspot..."
 
+ip6_net=""
+ip6_dns=""
 if [[ ! -v ip6_net ]]; then # if ip6_net not set
-	ip6_net=""
-
 	if [[ -e /tmp/.ynh-vpnclient-started ]]; then
 		vpnclient_ip6_net=$(ynh_app_setting_get vpnclient ip6_net 2>&1)
 
 		if [[ $vpnclient_ip6_net =~ :: ]]; then
 			ip6_net=${vpnclient_ip6_net}
+			ip6_dns="${ip6_net}1"
 		fi
 	fi
 fi
@@ -138,7 +139,7 @@ ynh_app_setting_set --app=$app --key=wifi_passphrase --value="${wifi_passphrase}
 ynh_app_setting_set --app=$app --key=wifi_device --value="${wifi_device}"
 ynh_app_setting_set --app=$app --key=wifi_channel --value=6
 ynh_app_setting_set --app=$app --key=ip6_firewall --value=1
-ynh_app_setting_set --app=$app --key=ip6_dns --value=""
+ynh_app_setting_set --app=$app --key=ip6_dns --value="${ip6_dns}"
 ynh_app_setting_set --app=$app --key=ip6_net --value="${ip6_net}"
 ynh_app_setting_set --app=$app --key=ip4_dns --value="10.0.242.1"
 ynh_app_setting_set --app=$app --key=ip4_nat_prefix --value=10.0.242