No ddns credentials for onion only system

src/freedombone

         exit 3
     fi
     if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
-        if [ ! $DDNS_USERNAME ]; then
-            echo $'Please provide the username for your dynamic DNS provider with the --ddnsuser option'
-            exit 7823
-        fi
-        if [ ! $DDNS_PASSWORD ]; then
-            echo $'Please provide the password for your dynamic DNS provider with the --ddnspass option'
-            exit 6382
+        if [[ $ONION_ONLY == "no" ]]; then
+            if [ ! $DDNS_USERNAME ]; then
+                echo $'Please provide the username for your dynamic DNS provider with the --ddnsuser option'
+                exit 7823
+            fi
+            if [ ! $DDNS_PASSWORD ]; then
+                echo $'Please provide the password for your dynamic DNS provider with the --ddnspass option'
+                exit 6382
+            fi
         fi
     fi
     if [ ! $SYSTEM_TYPE ]; then