weizhouapache commented on code in PR #11800:
URL: https://github.com/apache/cloudstack/pull/11800#discussion_r2589088275


##########
utils/src/main/java/com/cloud/utils/net/NetUtils.java:
##########
@@ -306,7 +306,7 @@ public static String getDefaultEthDevice() {
             final String defDev = Script.runSimpleBashScript("/sbin/route -n 
get default 2> /dev/null | grep interface | awk '{print $2}'");
             return defDev;
         }
-        return Script.runSimpleBashScript("ip route show default 0.0.0.0/0 | 
head -1 | awk '{print $5}'");
+        return Script.runSimpleBashScript("ip -j a | jq -r '.[] | .addr_info | 
map(select(.local == \"'`ip -j r s default | jq -r '.[0] | .prefsrc'`'\")) | 
.[].label'");

Review Comment:
   oh, then the change makes sense.
   thanks @mosys0815 



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