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[Bug 1437375] Update Released

 

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https://bugs.launchpad.net/bugs/1437375

Title:
  [udev] Adding "Austin" adapter to Ubuntu partition take over system
  network interface

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Vivid:
  Fix Released
Status in systemd source package in Wily:
  Fix Released

Bug description:
  [Impact]
  This impacts any user of LPARs; upon adding physical network interfaces (or, realistically, any network interface at all, even virtual), the network interface which is used for system access and used to install the system may not appear in the same order after reboot.

  [Test Case]
  Requires access to logical partitions.
  1) Install system
  2) Add an physical network adapter to the partition
  3) Reboot.

  Observed behavior:
  After reboot, the virtual adapter expected to be used is unavailable, the address is assigned to any other network adapter which may have been detected and used persistent addresses.

  Expected behavior
  The system should come up with network interfaces in the same order as before rebooting.

  [Regression Potential]
  Added virtual interfaces that should be not persist (because they are locally administered and thus may have their MAC address change) may come up as persistent devices due to the use of the ibmveth driver, and thus fail to work as expected.

  ---

  Problem Description:
  ====================

  Adding Austin adapter to Ubuntu partition took over system network
  interface.  This caused system to be off network connection.

   ver 1.5.4.3 - OS, HTX, Firmware and Machine details

                             OS: GNU/Linux
                     OS Version: Ubuntu Vivid Vervet (development branch) \n \l
                 Kernel Version: 3.18.0-13-generic
                    HTX Version: htxubuntu-322
                      Host Name: br14p08
              Machine Serial No: IBM,0210800E7
             Machine Type/Model: IBM,9119-MHE
                System FW Level: FW830.00 (SC830_021)

  BEFORE adding Austin adapter to br14p08:
  ========================================

  Before adding austin adapter to br14p05 (vio client), the system
  network is good.

  ubuntu@br14p08:~$ lsslot -cpci
  ubuntu@br14p08:~$

  + eth0             U9119.MHE.10800E7-V8-C2-T1
                                           Interpartition Logical LAN

  root@br14p08:~# lscfg |grep eth
  + eth0             U9119.MHE.10800E7-V8-C2-T1

  root@br14p08:~# ifconfig
  eth0      Link encap:Ethernet  HWaddr 16:59:c0:50:0a:02
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::1459:c0ff:fe50:a02/64 Scope:Link
            inet6 addr: 2002:903:15f:290:1459:c0ff:fe50:a02/64 Scope:Global
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:37366 errors:0 dropped:16 overruns:0 frame:0
            TX packets:153 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:2472739 (2.4 MB)  TX bytes:22596 (22.5 KB)
            Interrupt:19

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  root@br14p08:~# ping br14p08
  PING br14p08.aus.stglabs.ibm.com (9.3.21.12) 56(84) bytes of data.
  64 bytes from br14p08.aus.stglabs.ibm.com (9.3.21.12): icmp_seq=1 ttl=64 time=0.008 ms
  64 bytes from br14p08.aus.stglabs.ibm.com (9.3.21.12): icmp_seq=2 ttl=64 time=0.004 ms
  64 bytes from br14p08.aus.stglabs.ibm.com (9.3.21.12): icmp_seq=3 ttl=64 time=0.005 ms
  ^C
  --- br14p08.aus.stglabs.ibm.com ping statistics ---
  3 packets transmitted, 3 received, 0% packet loss, time 1998ms
  rtt min/avg/max/mdev = 0.004/0.005/0.008/0.003 ms

  root@br14p08:~# ping nimitz
  PING nimitz.aus.stglabs.ibm.com (9.3.165.31) 56(84) bytes of data.
  64 bytes from nimitz.aus.stglabs.ibm.com (9.3.165.31): icmp_seq=1 ttl=254 time=0.344 ms
  64 bytes from nimitz.aus.stglabs.ibm.com (9.3.165.31): icmp_seq=2 ttl=254 time=0.326 ms
  64 bytes from nimitz.aus.stglabs.ibm.com (9.3.165.31): icmp_seq=3 ttl=254 time=0.363 ms
  ^C

  AFTER ADDED Austin Adapter:
  ===========================

  Once the Austin adapter added to the partition, the Austin's 1st port became eth0.
  and it pushed the virtual ethernet (which is system's ethernet) to be eth4.
  However, the system still looking for eth0 as system's main network interface.

  root@br14p08:~# lscfg | grep eth
  + eth4             U9119.MHE.10800E7-V8-C2-T1
  + eth0             U78CA.001.RCH0133-P1-C2-C1-T1
  + eth0             U78CA.001.RCH0133-P1-C2-C1-T1
  + eth3             U78CA.001.RCH0133-P1-C2-C1-T2
  + ethernet         U78CA.001.RCH0133-P1-C2-C1-T3
  + eth5             U78CA.001.RCH0133-P1-C2-C1-T4

  + eth4             U9119.MHE.10800E7-V8-C2-T1
                                           Interpartition Logical LAN
  + eth0             U78CA.001.RCH0133-P1-C2-C1-T1
                                           PCIe2 4-port 1GbE Adapter (14105716)
  + eth0             U78CA.001.RCH0133-P1-C2-C1-T1
                                           Ethernet PCI Adapter
  + ptp0             U78CA.001.RCH0133-P1-C2-C1-T1

  + eth3             U78CA.001.RCH0133-P1-C2-C1-T2
                                           PCIe2 4-port 1GbE Adapter (14105716)
  + ethernet         U78CA.001.RCH0133-P1-C2-C1-T3
                                           PCIe2 4-port 1GbE Adapter (14105716)
  + eth5             U78CA.001.RCH0133-P1-C2-C1-T4
                                           PCIe2 4-port 1GbE Adapter (14105716)

  root@br14p08:~# ifconfig
  eth0      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a0
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::42f2:e9ff:fe5a:33a0/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:509 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:32744 (32.7 KB)
            Interrupt:248

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:258 errors:0 dropped:0 overruns:0 frame:0
            TX packets:258 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:28260 (28.2 KB)  TX bytes:28260 (28.2 KB)

  == Comment: #8 - Siraj M. Ismail <siraji@xxxxxxxxxx> - 2015-03-23 16:43:50 ==
  This is a LPAR on a PowerVM system, so no bridge or br0 interfaces on this one. The Virtual adapter is provided by the VIOS server, which shows up as a ethernet port when the LPAR boots up. The issue is that when another adapter with 4 ports gets added to the LPAR with DLPAR add operation while the partition is running, the original eth0 gets renamed to eth5 or similar, and we loose the IP configuration for the LPAR. And that is what need to be looked at and see if this is a driver issue or just a procedure change.

  Here are some details of what happens on the system:

  Before adding the adapter: (initial config)
  ================================
  root@br14p08:~# lsslot
  # Slot                   Description       Linux Name    Device(s)
  U9119.MHE.10800E7-V8-C0  Virtual I/O Slot  30000000      vty
  U9119.MHE.10800E7-V8-C2  Virtual I/O Slot  30000002      l-lan
  U9119.MHE.10800E7-V8-C3  Virtual I/O Slot  30000003      v-scsi

  root@br14p08:~# ethtool -P eth0
  Permanent address: 16:59:c0:50:0a:02     <== MAC

  root@br14p08:~# ifconfig -a
  eth0      Link encap:Ethernet  HWaddr 16:59:c0:50:0a:02
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::1459:c0ff:fe50:a02/64 Scope:Link
            inet6 addr: 2002:903:15f:290:1459:c0ff:fe50:a02/64 Scope:Global
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:375794 errors:0 dropped:1 overruns:0 frame:0
            TX packets:9646 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:46210638 (46.2 MB)  TX bytes:787820 (787.8 KB)
            Interrupt:19

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  root@br14p08:~# cat /etc/network/interfaces
  # This file describes the network interfaces available on your system
  # and how to activate them. For more information, see interfaces(5).

  # The loopback network interface
  auto lo
  iface lo inet loopback

  # The primary network interface
  auto eth0

  iface eth0 inet static
    address 9.3.21.12
    netmask 255.255.254.0
    gateway 9.3.20.1
    dns-nameservers 9.3.1.200
    dns-search aus.stglabs.ibm.com isst.aus.stglabs.ibm.com

  After adding a four port Ethernet adapter at runtime:
  ========================================

  Before Reboot:
  ===========
  root@br14p08:~# lspci
  01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  root@br14p08:~# ifconfig -a
  eth0      Link encap:Ethernet  HWaddr 16:59:c0:50:0a:02
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::1459:c0ff:fe50:a02/64 Scope:Link
            inet6 addr: 2002:903:15f:290:1459:c0ff:fe50:a02/64 Scope:Global
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:637083 errors:0 dropped:3 overruns:0 frame:0
            TX packets:10943 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:63241734 (63.2 MB)  TX bytes:977826 (977.8 KB)
            Interrupt:19

  eth3      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a1
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  eth4      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a2
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  eth5      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a3
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  rename6   Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a0
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  After reboot:
  =========

  root@br14p08:~# lspci
  01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  root@br14p08:~# lsslot
  # Slot                   Description       Linux Name    Device(s)
  U9119.MHE.10800E7-V8-C0  Virtual I/O Slot  30000000      vty
  U9119.MHE.10800E7-V8-C2  Virtual I/O Slot  30000002      l-lan
  U9119.MHE.10800E7-V8-C3  Virtual I/O Slot  30000003      v-scsi
  root@br14p08:~#

  root@br14p08:~# ifconfig
  eth0      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a0
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::42f2:e9ff:fe5a:33a0/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:242 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:15656 (15.6 KB)
            Interrupt:248

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:123 errors:0 dropped:0 overruns:0 frame:0
            TX packets:123 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:13584 (13.5 KB)  TX bytes:13584 (13.5 KB)

  root@br14p08:~# ethtool -P eth0           <=  Eth0 has changed to new adapter
  Permanent address: 40:f2:e9:5a:33:a0

  As you can see, port for eth0 has now changed, but the IP address
  stayed with the port name eth0, whih causes the LPAR to loose it's
  network. That is the issue we need to address with this bug.

  == Comment: #9 - Brian J. King <bjking1@xxxxxxxxxx> - 2015-03-23 18:49:15 ==
  It looks like Ubuntu 14.04 by default uses /lib/udev/write_net_rules to modify /etc/udev/rules.d/70-persistent-net.rules in order to do persistent eth device name binding. Looking at /etc/udev/rules.d/70-persistent-net.rules on this system, I see multiple entries for the same mac address, so something may be broken in this script.

  == Comment: #11 - Siraj M. Ismail <siraji@xxxxxxxxxx> - 2015-03-24 10:19:20 ==
  This is a LPAR on a PowerVM system, so no bridge or br0 interfaces on this one. The Virtual adapter is provided by the VIOS server, which shows up as a ethernet port when the LPAR boots up. The issue is that when another adapter with 4 ports gets added to the LPAR with DLPAR add operation while the partition is running, the original eth0 gets renamed to eth5 or similar, and we loose the IP configuration for the LPAR. And that is what need to be looked at and see if this is a driver issue or just a procedure change.

  Here are some details of what happens on the system:

  Before adding the adapter: (initial config)
  ================================
  root@br14p08:~# lsslot
  # Slot                   Description       Linux Name    Device(s)
  U9119.MHE.10800E7-V8-C0  Virtual I/O Slot  30000000      vty
  U9119.MHE.10800E7-V8-C2  Virtual I/O Slot  30000002      l-lan
  U9119.MHE.10800E7-V8-C3  Virtual I/O Slot  30000003      v-scsi

  root@br14p08:~# ethtool -P eth0
  Permanent address: 16:59:c0:50:0a:02     <== MAC

  root@br14p08:~# ifconfig -a
  eth0      Link encap:Ethernet  HWaddr 16:59:c0:50:0a:02
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::1459:c0ff:fe50:a02/64 Scope:Link
            inet6 addr: 2002:903:15f:290:1459:c0ff:fe50:a02/64 Scope:Global
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:375794 errors:0 dropped:1 overruns:0 frame:0
            TX packets:9646 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:46210638 (46.2 MB)  TX bytes:787820 (787.8 KB)
            Interrupt:19

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  root@br14p08:~# cat /etc/network/interfaces
  # This file describes the network interfaces available on your system
  # and how to activate them. For more information, see interfaces(5).

  # The loopback network interface
  auto lo
  iface lo inet loopback

  # The primary network interface
  auto eth0

  iface eth0 inet static
    address 9.3.21.12
    netmask 255.255.254.0
    gateway 9.3.20.1
    dns-nameservers 9.3.1.200
    dns-search aus.stglabs.ibm.com isst.aus.stglabs.ibm.com

  After adding a four port Ethernet adapter at runtime:
  ========================================

  Before Reboot:
  ===========
  root@br14p08:~# lspci
  01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  root@br14p08:~# ifconfig -a
  eth0      Link encap:Ethernet  HWaddr 16:59:c0:50:0a:02
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::1459:c0ff:fe50:a02/64 Scope:Link
            inet6 addr: 2002:903:15f:290:1459:c0ff:fe50:a02/64 Scope:Global
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:637083 errors:0 dropped:3 overruns:0 frame:0
            TX packets:10943 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:63241734 (63.2 MB)  TX bytes:977826 (977.8 KB)
            Interrupt:19

  eth3      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a1
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  eth4      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a2
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  eth5      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a3
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  rename6   Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a0
            BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  After reboot:
  =========

  root@br14p08:~# lspci
  01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.2 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  01:00.3 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
  root@br14p08:~# lsslot
  # Slot                   Description       Linux Name    Device(s)
  U9119.MHE.10800E7-V8-C0  Virtual I/O Slot  30000000      vty
  U9119.MHE.10800E7-V8-C2  Virtual I/O Slot  30000002      l-lan
  U9119.MHE.10800E7-V8-C3  Virtual I/O Slot  30000003      v-scsi
  root@br14p08:~#

  root@br14p08:~# ifconfig
  eth0      Link encap:Ethernet  HWaddr 40:f2:e9:5a:33:a0
            inet addr:9.3.21.12  Bcast:9.3.21.255  Mask:255.255.254.0
            inet6 addr: fe80::42f2:e9ff:fe5a:33a0/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:242 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 (0.0 B)  TX bytes:15656 (15.6 KB)
            Interrupt:248

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:123 errors:0 dropped:0 overruns:0 frame:0
            TX packets:123 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:13584 (13.5 KB)  TX bytes:13584 (13.5 KB)

  root@br14p08:~# ethtool -P eth0           <=  Eth0 has changed to new adapter
  Permanent address: 40:f2:e9:5a:33:a0

  As you can see, port for eth0 has now changed, but the IP address
  stayed with the port name eth0, whih causes the LPAR to loose it's
  network. That is the issue we need to address with this bug.

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