diff --git a/crates/libcgroups/src/systemd/dbus_native/dbus.rs b/crates/libcgroups/src/systemd/dbus_native/dbus.rs
index 533d8d0d..9b6fa32e 100644
--- a/crates/libcgroups/src/systemd/dbus_native/dbus.rs
+++ b/crates/libcgroups/src/systemd/dbus_native/dbus.rs
@@ -7,7 +7,6 @@ use super::utils::{DbusError, Result, SystemdClientError};
 use nix::sys::socket;
 use std::collections::HashMap;
 use std::io::{IoSlice, IoSliceMut};
-use std::mem::ManuallyDrop;
 use std::os::fd::AsRawFd;
 use std::path::PathBuf;
 use std::sync::atomic::{AtomicU32, Ordering};
@@ -123,7 +122,8 @@ impl DbusConnection {
     /// Open a new dbus connection to given address
     /// authenticating as user with given uid
     pub fn new(addr: &str, uid: u32, system: bool) -> Result<Self> {
-        let socket = ManuallyDrop::new(socket::socket(
+        // Use ManuallyDrop to keep the socket open. 
+        let socket = std::mem::ManuallyDrop::new(socket::socket(
             socket::AddressFamily::Unix,
             socket::SockType::Stream,
             socket::SockFlag::empty(),
diff --git a/crates/libcontainer/src/channel.rs b/crates/libcontainer/src/channel.rs
index 4afab2c3..cacd84df 100644
--- a/crates/libcontainer/src/channel.rs
+++ b/crates/libcontainer/src/channel.rs
@@ -216,6 +216,8 @@ fn unix_channel() -> Result<(RawFd, RawFd), ChannelError> {
         None,
         socket::SockFlag::SOCK_CLOEXEC,
     )?;
+    // It is not straightforward to share the OwnedFd across forks, so we 
+    // treat them as i32. We use ManuallyDrop to keep the connection open. 
     let f1 = std::mem::ManuallyDrop::new(f1);
     let f2 = std::mem::ManuallyDrop::new(f2);
 
diff --git a/crates/libcontainer/src/tty.rs b/crates/libcontainer/src/tty.rs
index 2d306b60..495b2772 100644
--- a/crates/libcontainer/src/tty.rs
+++ b/crates/libcontainer/src/tty.rs
@@ -81,7 +81,7 @@ pub fn setup_console_socket(
         linked: linked.to_path_buf().into(),
         console_socket_path: console_socket_path.to_path_buf().into(),
     })?;
-
+    // Using ManuallyDrop to keep the socket open.
     let csocketfd = std::mem::ManuallyDrop::new(
         socket::socket(
             socket::AddressFamily::Unix,
@@ -117,6 +117,7 @@ pub fn setup_console(console_fd: &RawFd) -> Result<()> {
     let iov = [IoSlice::new(pty_name)];
 
     let [master, slave] = [openpty_result.master, openpty_result.slave];
+    // Use ManuallyDrop to keep FDs open. 
     let master = std::mem::ManuallyDrop::new(master);
     let slave = std::mem::ManuallyDrop::new(slave);