Comment # 59 on bug 1080485 from Ronnie Bailey

I set network management to "Wicked" via Yast. NetworkManager closed. I still
got the messages on shutdown. Something curious though. On reboot,
NetworkManager was running. I went to Yast and it still showed Wicked as the
service to use. 

Earlier, I removed the bpfilter module. lsmod had showed it being used by 0.
When I initiated shutdown, the first console message I got was "starting
bpfilter". But during that shutdown there were no messages. 

I am not sure if it would make a difference, but I have never migrated to
btrfs. My volumes are formatted as ext4. 

Shutdowns on my system typically take 90 seconds or so, which seems quite long
to me. One of the final messages I get before the long delay is: "Stopping
monitoring of LVM2 partitions" or something to that effect. After a very long
delay, I get the error messages which flash by quickly, just before shutdown.