diff --git a/easytier/src/proto/utils.rs b/easytier/src/proto/utils.rs
index 80fde761..0f37f89b 100644
--- a/easytier/src/proto/utils.rs
+++ b/easytier/src/proto/utils.rs
@@ -1,7 +1,7 @@
 use derive_more::{Deref, DerefMut, From, IntoIterator};
 use itertools::Itertools;
 use serde::{Deserialize, Serialize};
-use crate::dns::utils::MapTryInto;
+use crate::utils::MapTryInto;
 
 pub trait MessageModel<Message: prost::Message>: Into<Message> + for<'m> TryFrom<&'m Message> {}
 
diff --git a/easytier/src/utils.rs b/easytier/src/utils.rs
index 6bfb4941..bc964cd9 100644
--- a/easytier/src/utils.rs
+++ b/easytier/src/utils.rs
@@ -161,3 +161,16 @@ pub trait DeterministicDigest: Serialize {
 }
 
 impl<S: Serialize> DeterministicDigest for S {}
+
+pub trait MapTryInto<S> {
+    fn map_try_into<T: TryFrom<S>>(self) -> impl Iterator<Item = Result<T, T::Error>>;
+}
+
+impl<I, S> MapTryInto<S> for I
+where
+    I: IntoIterator<Item = S>,
+{
+    fn map_try_into<T: TryFrom<S>>(self) -> impl Iterator<Item = Result<T, T::Error>> {
+        self.into_iter().map(T::try_from)
+    }
+}