RTNETLINK answers: Cannot assign requested address

mattsoftnet · 08-16-2011, 10:58 AM

Code:

[root@server network-scripts]# service network restart
Shutting down interface br0:                               [  OK  ]
Shutting down interface br1:                               [  OK  ]
Shutting down interface br2:                               [  OK  ]
Shutting down interface eth0:                              [  OK  ]
Shutting down interface eth2:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:                                [  OK  ]
Bringing up interface eth1:  RTNETLINK answers: Cannot assign requested address
can't add eth1 to bridge br1: Invalid argument
                                                           [  OK  ]
Bringing up interface eth2:                                [  OK  ]
Bringing up interface br0:                                 [  OK  ]
Bringing up interface br1:                                 [  OK  ]
Bringing up interface br2:                                 [  OK  ]

I ran into some problems where I had to reinstall the os on my server. I'm running centos 6 and kvm. fresh install, updated, now trying to set up bridged networking. I don't know what this error means or where to look for more information.

ifcfg-eth0

Code:

DEVICE=eth0
HWADDR=6c:62:6d:c8:e4:d9
ONBOOT=yes
BRIDGE=br0
BOOTPROTO=none
TYPE=Ethernet
IPV6INIT=no
USERCTL=no

ifcfg-br0

Code:

DEVICE=br0
ONBOOT=yes
TYPE=Bridge
BOOTPROTO=none
IPADDR=192.168.3.2
NETMASK=255.255.255.0
GATEWAY=192.168.3.10
STP=on
DELAY=0
IPV6INIT=no
USERCTL=no

ifcfg-eth1

Code:

DEVICE=eth1
ONBOOT=yes
BRIDGE=br1
BOOTPROTO=none
TYPE=Ethernet
IPV6INIT=no
USERCTL=no

ifcfg-br1

Code:

DEVICE=br1
ONBOOT=yes
TYPE=Bridge
BOOTPROTO=none
IPADDR=192.168.210.2
GATEWAY=192.168.210.2
STP=on
DELAY=0
IPV6INIT=no
USERCTL=no

ifcfg-eth2

Code:

DEVICE=eth2
ONBOOT=yes
BRIDGE=br2
BOOTPROTO=none
TYPE=Ethernet
IPV6INIT=no
USERCTL=no

ifcfg-br2

Code:

DEVICE=br2
ONBOOT=yes
TYPE=Bridge
BOOTPROTO=none
IPADDR=192.168.220.2
GATEWAY=192.168.220.2
STP=on
DELAY=0
IPV6INIT=no
USERCTL=no

the local network is in the 192.168.3. range. the temp router ends in 10, but will be 1 when running in a virtual machine. eth0 is the lan, eth1 wan, eth2 not in use. in the past I've always gotten the wan bridge to work by setting an unused ip/subnet just to bring the interface online but not request an ip via dhcp.

mattsoftnet · 08-17-2011, 12:13 AM

I've slept on it, and now I'm thinking, I need to learn more about what I'm trying to do. back to reading books while my server sits offline *sadface*

what I don't get, the first time I set up centos 6 and kvm and networking, I had it working perfectly the first time. a week later, disaster. the servers networking seemed to drag down to 10kbs, and a few days before that 2 hard drive failures at the same time. I've ordered a new pci nic and a power supply just in case. already improved cabinet cooling with a better wall wart. now, setting up the networking with virt-manager the same way I was before, doesn't work. I'm sure something dumb is wrong.

mattsoftnet · 08-17-2011, 04:09 AM

I removed the card and reinstalled the os. seems to be ok now. also, I added the static ip 192.168.3.2 to both br0 and eth0. not sure if it should be set that way, but I think it's working so far. haven't tried the other bridge yet.