diff --git a/src/bin/izoli.rs b/src/bin/izoli.rs
index b86b598..b260bd5 100644
--- a/src/bin/izoli.rs
+++ b/src/bin/izoli.rs
@@ -29,9 +29,12 @@ fn main() {
                     max: CGroupLimitValue::Max,
                     period: 100000,
                 }),
+                ..Default::default()
             }),
+            new_net: true,
         },
     );
+
     let pid = izolibox
         .enter(Box::new(|| {
             IzoliBox::prelude(1).unwrap();
diff --git a/src/izolibox.rs b/src/izolibox.rs
index 5409937..c94e3af 100644
--- a/src/izolibox.rs
+++ b/src/izolibox.rs
@@ -20,6 +20,7 @@ pub struct IzoliBox {
 #[derive(Debug, Clone, Default)]
 pub struct IzoliBoxOptions {
     pub cgroup_option: Option<CGroupOption>,
+    pub new_net: bool,
 }
 
 impl IzoliBox {
@@ -30,11 +31,14 @@ impl IzoliBox {
     pub fn enter(&self, callback: CloneCb<'_>) -> Result<Pid, nix::errno::Errno> {
         info!("box enter");
         let mut stack = [0u8; STACK_SIZE];
-        let flags = CloneFlags::CLONE_NEWNS
+        let mut flags = CloneFlags::CLONE_NEWNS
             | CloneFlags::CLONE_NEWUTS
             | CloneFlags::CLONE_NEWIPC
-            | CloneFlags::CLONE_NEWPID
-            | CloneFlags::CLONE_NEWNET;
+            | CloneFlags::CLONE_NEWPID;
+
+        if self.options.new_net {
+            flags = flags | CloneFlags::CLONE_NEWNET;
+        }
 
         if let Some(cgroup_option) = &self.options.cgroup_option {
             let cgroup = CGroup::new(&format!("izoli/box_{}", self.id)).unwrap();