diff --git a/exts/devmaster/src/lib/rules/exec_unit.rs b/exts/devmaster/src/lib/rules/exec_unit.rs
index 6bd12343840b545e2c0033b3dc82896688c500b1..d3f72ca34a4a06284f2f8a37c7c95f11de079e7b 100644
--- a/exts/devmaster/src/lib/rules/exec_unit.rs
+++ b/exts/devmaster/src/lib/rules/exec_unit.rs
@@ -241,14 +241,23 @@ impl ExecuteUnitData {
     }
 
     fn rename_netif(&self) -> Result<bool> {
+        let ifindex = match self.device.borrow().get_ifindex().context(DeviceSnafu) {
+            Ok(ifindex) => ifindex,
+            Err(e) => {
+                if e.get_errno() == nix::Error::ENOENT {
+                    return Ok(false);
+                }
+
+                return Err(e);
+            }
+        };
+
         let rt = tokio::runtime::Runtime::new().unwrap();
 
         if let Err(e) = rt.block_on(async {
             let (connection, handle, _) = new_connection().unwrap();
             tokio::spawn(connection);
 
-            let ifindex = self.device.borrow().get_ifindex().context(DeviceSnafu)?;
-
             set_link_name(handle, ifindex, self.name.clone())
                 .await
                 .context(RtnetlinkSnafu)
diff --git a/exts/devmaster/src/lib/rules/node.rs b/exts/devmaster/src/lib/rules/node.rs
index c5fbff0f99cedebab780b97a5fc586a7c271e518..3a68f0bde6db42f8ae505f4e9ff1e69dd13e88da 100644
--- a/exts/devmaster/src/lib/rules/node.rs
+++ b/exts/devmaster/src/lib/rules/node.rs
@@ -379,7 +379,7 @@ pub(crate) fn get_prior_dir(symlink: &str) -> Result<String> {
         Some(v) => v,
     };
 
-    let name = match cano_link.strip_prefix("/dev") {
+    let name = match cano_link.strip_prefix("/dev/") {
         Some(s) => s,
         None => {
             return Err(Error::Nix {
@@ -716,7 +716,7 @@ mod test {
                     }
                 }
 
-                remove_dir_all("/run/devmaster/links/\\x2ftest\\x2fupdate_prior_dir/").unwrap();
+                remove_dir_all("/run/devmaster/links/test\\x2fupdate_prior_dir/").unwrap();
             }
             Err(e) => {
                 assert!(e.get_errno() == nix::Error::EACCES);
diff --git a/exts/devmaster/src/lib/rules/rules_load.rs b/exts/devmaster/src/lib/rules/rules_load.rs
index d5bd8ebba3b6f45fa5d4e0d2cd22020c4b85698c..a5e4237960135b0c3230753c30cac2abb9a33432 100644
--- a/exts/devmaster/src/lib/rules/rules_load.rs
+++ b/exts/devmaster/src/lib/rules/rules_load.rs
@@ -1660,7 +1660,7 @@ impl RuleToken {
 
                 if op != OperatorType::Assign {
                     return Err(Error::RulesLoadError {
-                        msg: "Key 'GOTO' can not take assign operator.".to_string(),
+                        msg: "Key 'GOTO' should take '=' operator.".to_string(),
                     });
                 }
 
@@ -1683,7 +1683,7 @@ impl RuleToken {
 
                 if op != OperatorType::Assign {
                     return Err(Error::RulesLoadError {
-                        msg: "Key 'LABEL' can not take assign operator.".to_string(),
+                        msg: "Key 'LABEL' should take '=' operator.".to_string(),
                     });
                 }