[ovs-discuss] CentOS 6.4 warning: "RTNETLINK answers: File exists" while network restart.

[Denis Iskandarov]

Tried to add additional guest-os network interface(eth1) which is not
connected to any host-os interface.
Resides and connected only in OS where OVS is installed: centOS 6.4

Maybe something wrong with ifup ifdown scripts with pre up or pre down
function like some excess statement check in scripts.

Different mac address on interface. Differs from mac on
bridge because bridge still using MAC of first interface (eth0)

Still same warning:
 service network restart
Shutting down interface eth0:                              [  OK  ]
Shutting down interface ovs0:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:                                [  OK  ]
Bringing up interface eth1:  RTNETLINK answers: File exists [  OK  ]
Bringing up interface ovs0:  RTNETLINK answers: File exists [  OK  ]

ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0C:29:2E:30:48
          inet6 addr: fe80::20c:29ff:fe2e:3048/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:30314 errors:0 dropped:0 overruns:0 frame:0
          TX packets:289 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:20401385 (19.4 MiB)  TX bytes:45235 (44.1 KiB)

eth1      Link encap:Ethernet  HWaddr 00:0C:29:2E:30:52
          inet6 addr: fe80::20c:29ff:fe2e:3052/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4931 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:384773 (375.7 KiB)

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:16436  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)

ovs0      Link encap:Ethernet  HWaddr 00:0C:29:2E:30:48
          inet addr:192.168.0.111  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::18ba:8cff:fea6:ee4c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4969 errors:0 dropped:0 overruns:0 frame:0
          TX packets:56 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:388098 (379.0 KiB)  TX bytes:5714 (5.5 KiB)
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