Hi, I have the same problem with one KVM guest-system using an iscsi target. The problem cannot be solved with unmounting the iSCSI target manual, before shutdown.
#dpkg -S /etc/network/if-down.d/* open-iscsi: /etc/network/if-down.d/open-iscsi resolvconf: /etc/network/if-down.d/resolvconf ifupdown: /etc/network/if-down.d/upstart The system is configured with 3 bridge interfaces. #/etc/init.d/networking -v *Deconfiguring network interfaces... Configuring interface eth0=eth0 (inet) run-parts --verbose /etc/network/if-down.d run-parts: executing /etd/network/if-down.d/open-iscsi * Disconnecting iSCSI targets [ 1232.432014] connecting7:0: ping timeout of 5 secs expired ..... and so on ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1010045 Title: 12.04 hangs on shutdown deconfiguring network interfaces To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1010045/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs