Github user jieyu commented on a diff in the pull request:
https://github.com/apache/mesos/pull/263#discussion_r168652041
--- Diff: src/slave/containerizer/mesos/isolators/network/cni/cni.cpp ---
@@ -721,7 +721,7 @@ Future<Option<ContainerLaunchInfo>>
NetworkCniIsolatorProcess::prepare(
env->set_name("LIBPROCESS_IP");
env->set_value("0.0.0.0");
- if (!containerId.has_parent()) {
+ if (needsSeparateNs) {
--- End diff --
This should be
```
if (!isDebugContainer && (!nestedContainer || !joinParentNetwork))
```
---
