use ip route structured data to retrieve default interface

Bjoern Anters · Bjoern Anters · commit dbaeeda7bcc7 · 2025-06-16T16:17:49.000+02:00
diff --git a/utils/src/main/java/com/cloud/utils/net/NetUtils.java b/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 $2}'");
             return defDev;
         }
-        return Script.runSimpleBashScript("/bin/ip -j a | /bin/jq -r '.[] | .addr_info | map(select(.local == "'`/bin/ip -j r s default | /bin/jq -r '.[0] | .prefsrc'`'")) | .[].label'");
+        return Script.runSimpleBashScript("IP=$(/bin/ip -j r s default | /bin/jq -r '.[0] | .prefsrc') && /bin/ip -j a | /bin/jq -r '.[] | .addr_info | map(select(.local == "'${IP}'")) | .[].label'");
     }
 
     public static String getLocalIPString() {

Original file line number	Diff line number	Diff line change
`@@ -306,7 +306,7 @@ public static String getDefaultEthDevice() {`
`306`	`306`	`final String defDev = Script.runSimpleBashScript("/sbin/route -n get default 2> /dev/null \| grep interface \| awk '{print $2}'");`
`307`	`307`	`return defDev;`
`308`	`308`	`}`
`309`		- return Script.runSimpleBashScript("/bin/ip -j a \| /bin/jq -r '.[] \| .addr_info \| map(select(.local == "'`/bin/ip -j r s default \| /bin/jq -r '.[0] \| .prefsrc'`'")) \| .[].label'");
	`309`	`+ return Script.runSimpleBashScript("IP=$(/bin/ip -j r s default \| /bin/jq -r '.[0] \| .prefsrc') && /bin/ip -j a \| /bin/jq -r '.[] \| .addr_info \| map(select(.local == "'${IP}'")) \| .[].label'");`
`310`	`310`	`}`
`311`	`311`
`312`	`312`	`public static String getLocalIPString() {`