Description of problem:
Shutdown VM, virt-viewer will spit out the confirmation message. As soon as confirmation window comes up the Host loosing its network connection for a period.

Version-Release number of selected component:
openvswitch-1.9.0-1.fc18

Additional info:
backtrace_rating: 3
cmdline:        ovs-vswitchd unix:/var/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info --mlockall --no-chdir --log-file=/var/log/openvswitch/ovs-vswitchd.log --pidfile=/var/run/openvswitch/ovs-vswitchd.pid --detach --monitor
executable:     /usr/sbin/ovs-vswitchd
kernel:         3.8.4-202.fc18.x86_64
uid:            0
ureports_counter: 3

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 ??
 #1 send_bpdu_cb at ofproto/ofproto-dpif.c:1368
 #2 stp_send_bpdu at lib/stp.c:1347
 #3 stp_transmit_config at lib/stp.c:855
 #4 stp_config_bpdu_generation at lib/stp.c:912
 #5 stp_hello_timer_expiry at lib/stp.c:1154
 #6 stp_tick at lib/stp.c:306
 #7 stp_run at ofproto/ofproto-dpif.c:1548
 #8 run at ofproto/ofproto-dpif.c:1003
 #9 ofproto_run at ofproto/ofproto.c:1076