Cong Wang <xiyou.wangc...@gmail.com> writes: > Network namespace does not special-case the physical devices, > it treats them all equally as abstract net devices.
Absolutely not true. The relevant code is in net/core/dev.c:default_device_exit If a network device does not implement rntl_link_ops it is returned to the initial network namespace. Anything else will loose physical devices. Only for pure software based devices do we delete them. Perhaps your sub interface implements rtnl_link_ops? Either that or something is still holding a reference to your network namespace, which would prevent the network device from being returned. Eric
