diff --git a/ezctl b/ezctl
index 1b89bf4..08714b7 100755
--- a/ezctl
+++ b/ezctl
@@ -411,7 +411,7 @@ function start-aio(){
     # Check ENV 'HOST_IP', exists if the CMD 'ezctl' running in a docker container
     if [[ -z $HOST_IP ]];then
         # ezctl runs in a host machine, get host's ip
-        HOST_IF=$(ip route|grep default|cut -d' ' -f5)
+        HOST_IF=$(ip route|grep default|head -n1|cut -d' ' -f5)
         HOST_IP=$(ip a|grep "$HOST_IF$"|head -n1|awk '{print $2}'|cut -d'/' -f1)
     fi
     set -u
diff --git a/ezdown b/ezdown
index a962987..1a7b484 100755
--- a/ezdown
+++ b/ezdown
@@ -327,8 +327,8 @@ function start_kubeasz_docker() {
 
   logger info "try to run kubeasz in a container"
   # get host's IP
-  host_if=$(ip route|grep default|cut -d' ' -f5)
-  host_ip=$(ip a|grep "$host_if$"|awk '{print $2}'|cut -d'/' -f1)
+  host_if=$(ip route|grep default|head -n1|cut -d' ' -f5)
+  host_ip=$(ip a|grep "$host_if$"|head -n1|awk '{print $2}'|cut -d'/' -f1)
   logger debug "get host IP: $host_ip"
 
   # allow ssh login using key locally