This makes sure to delete veth devices after we've killed the container. In the case of a destroy or crash, this ensures the system is cleaned up properly. To be applied atop Daniel Berrange's current LXC patch stack. diff -r b18ae864eb98 -r cd0bd9a6288a src/lxc_driver.c --- a/src/lxc_driver.c Wed Aug 13 09:40:08 2008 -0700 +++ b/src/lxc_driver.c Thu Aug 14 08:50:49 2008 -0700 @@ -375,6 +375,7 @@ int rc = -1; int waitRc; int childStatus = -1; + virDomainNetDefPtr net; while (((waitRc = waitpid(vm->pid, &childStatus, 0)) == -1) && errno == EINTR) @@ -403,6 +404,11 @@ vm->pid = -1; vm->def->id = -1; vm->monitor = -1; + + for (net = vm->def->nets; net; net = net->next) { + vethInterfaceUpOrDown(net->ifname, 0); + vethDelete(net->ifname); + } return rc; }