diff --git a/dev/serve b/dev/serve
index c79e63a..edf230b 100755
--- a/dev/serve
+++ b/dev/serve
@@ -13,6 +13,10 @@ if [ -z $APP_HOST ]; then
         fi
     done
 
+    if [ -z $APP_HOST ]; then
+        APP_HOST=$(hostname -I 2>/dev/null | awk '{print $1}')
+    fi
+
     if [ -z $APP_HOST ]; then
         APP_HOST=$(hostname -i 2>/dev/null)
     fi
diff --git a/dev/start b/dev/start
index fed2a65..4b961fb 100755
--- a/dev/start
+++ b/dev/start
@@ -17,6 +17,10 @@ if [ -z $NEKO_ROOMS_NAT1TO1 ]; then
         fi
     done
 
+    if [ -z $NEKO_ROOMS_NAT1TO1 ]; then
+        NEKO_ROOMS_NAT1TO1=$(hostname -I 2>/dev/null | awk '{print $1}')
+    fi
+
     if [ -z $NEKO_ROOMS_NAT1TO1 ]; then
         NEKO_ROOMS_NAT1TO1=$(hostname -i 2>/dev/null)
     fi