Comment 0 for bug 1197078

Raised upstream:

https://mailman.stanford.edu/pipermail/mininet-discuss/2013-July/002473.html

Also seen in DEP-8 tests for Saucy:

https://jenkins.qa.ubuntu.com/job/saucy-adt-openvswitch/28/ARCH=i386,label=adt/

Syslog extract:

Jul 1 10:57:42 autopkgtest ovs-vsctl: 00001|vsctl|INFO|Called as ovs-vsctl del-br s2
Jul 1 10:57:42 autopkgtest kernel: [ 402.953438] device s2-eth3 left promiscuous mode
Jul 1 10:57:42 autopkgtest kernel: [ 402.953588] device s2-eth4 left promiscuous mode
Jul 1 10:57:42 autopkgtest kernel: [ 402.953724] device s2-eth7 left promiscuous mode
Jul 1 10:57:42 autopkgtest kernel: [ 402.953853] device s2-eth6 left promiscuous mode
Jul 1 10:57:42 autopkgtest kernel: [ 402.953986] device s2-eth2 left promiscuous mode
Jul 1 10:57:42 autopkgtest kernel: [ 402.954049] device s2 left promiscuous mode
Jul 1 10:57:42 autopkgtest ovs-controller: 00366|poll_loop|DBG|wakeup due to [POLLIN] on fd 9 (127.0.0.1:6633<->127.0.0.1:40235) at ../lib/stream-fd.c:142 (0% CPU usage)
Jul 1 10:57:42 autopkgtest ovs-controller: 00367|rconn|DBG|tcp:127.0.0.1:40235: connection closed by peer
Jul 1 10:57:42 autopkgtest ovs-controller: 00368|rconn|DBG|void: entering VOID
Jul 1 10:57:42 autopkgtest ovs-controller: 00369|poll_loop|DBG|wakeup due to [POLLIN] on fd 6 (FIFO pipe:[44662]) at ../lib/fatal-signal.c:173 (0% CPU usage)
Jul 1 10:57:42 autopkgtest ovs-controller: 00370|fatal_signal|WARN|terminating with signal 15 (Terminated)
Jul 1 10:57:42 autopkgtest kernel: [ 403.376840] IPv6: ADDRCONF(NETDEV_UP): s1-eth1: link is not ready
Jul 1 10:57:52 autopkgtest kernel: [ 413.552113] unregister_netdevice: waiting for lo to become free. Usage count = 2
Jul 1 10:58:03 autopkgtest kernel: [ 423.792110] unregister_netdevice: waiting for lo to become free. Usage count = 2
Jul 1 10:58:13 autopkgtest kernel: [ 434.032116] unregister_netdevice: waiting for lo to become free. Usage count = 2
Jul 1 10:58:23 autopkgtest kernel: [ 444.272126] unregister_netdevice: waiting for lo to become free. Usage count = 2

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: mininet 2.0.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.10.0-1.8-generic 3.10.0-rc7
Uname: Linux 3.10.0-1-generic x86_64
ApportVersion: 2.10.2-0ubuntu3
Architecture: amd64
Date: Tue Jul 2 19:17:36 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-04-23 (70 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423)
MarkForUpload: True
SourcePackage: mininet
UpgradeStatus: Upgraded to saucy on 2013-06-15 (16 days ago)