Multiple IP addresses on one NIC: "Cannot assign requested address" error

cpbl · 06-09-2009, 07:43 PM

I used system-config-network to add a second IP address to my eth0, running on a server with the latest Fedora.

The "activate" and "deactivate" buttons in this GUI are greyed out. Also, the new IP address is listed as "inactive".

So I restart the network. I get:

> service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: SIOCGIFADDR: Cannot assign requested address
SIOCSIFBROADCAST: Cannot assign requested address
SIOCSIFBRDADDR: Cannot assign requested address
SIOCSIFFLAGS: Cannot assign requested address
[ OK ]
[root@csrv log]# system-config-network

It seems that things are working (both IP addresses reach the server) although ifconfig reports just one entry for eth0, and it has the second (child?) address as it's IP address. Instead, I was expecting to see a listing for eth0:0 and eth0:1 or something.

Anyone know what I'm doing wrong? Those errors are quite unnerving.

Thanks,
Chris

Brian1 · 06-09-2009, 08:58 PM

You will always have eth0. Then you name the next as you wish eth0:0.
I not a gui guy when it comes to network config. Call me old school.
Look at the /etc/sysconfig/network-scripts and see the ifcfg-**** files. They are text files so post them for eth0 and eth0:0.

Brian

cpbl · 06-09-2009, 09:19 PM

Yes, thanks, here are those files.

Code:

 cat ifcfg-eth0

# Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper)
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:15:17:82:dc:f0
ONBOOT=yes
SEARCH="econ.ubc.ca"
NETMASK=255.255.255.0
IPADDR=137.82.185.170
GATEWAY=137.82.0.1
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
IPV6INIT=no
NM_CONTROLLED=yes
DNS1=137.82.1.1
DNS2=142.103.1.1
DOMAIN='econ.ubc.ca ubc.ca'

# cat ifcfg-eth0:1 
# Please read /usr/share/doc/initscripts-*/sysconfig.txt
# for the documentation of these parameters.
GATEWAY=137.82.0.1
TYPE=Ethernet
DEVICE=eth0:1
BOOTPROTO=none
NETMASK=255.255.255.0
IPADDR=137.82.185.168
USERCTL=no
PEERDNS=yes
IPV6INIT=no
ONPARENT=yes
NM_CONTROLLED=yes

cpbl · 06-09-2009, 09:21 PM

And some other things I mentioned:

# service network status

Code:

Configured devices:
lo eth0
Currently active devices:
lo eth0 eth1

ifconfig

Code:

eth0      Link encap:Ethernet  HWaddr 00:15:17:82:DC:F0  
          inet addr:137.82.185.168  Bcast:137.82.185.255  Mask:255.255.255.0
          inet6 addr: fe80::215:17ff:fe82:dcf0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:109491698 errors:0 dropped:0 overruns:0 frame:0
          TX packets:81621999 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:61452247144 (57.2 GiB)  TX bytes:46863646627 (43.6 GiB)
          Memory:ba820000-ba840000 

eth1      Link encap:Ethernet  HWaddr 00:15:17:82:DC:F1  
          UP 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)
          Memory:ba800000-ba820000 

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:4753120 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4753120 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:4784130418 (4.4 GiB)  TX bytes:4784130418 (4.4 GiB)

Shaik nayaz · 06-10-2009, 12:52 AM

Quote:

Originally Posted by cpbl

I used system-config-network to add a second IP address to my eth0.

The "activate" and "deactivate" buttons in this GUI are greyed out. Also, the new IP address is listed as "inactive".

So I restart the network. I get:

> service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: SIOCGIFADDR: Cannot assign requested address
SIOCSIFBROADCAST: Cannot assign requested address
SIOCSIFBRDADDR: Cannot assign requested address
SIOCSIFFLAGS: Cannot assign requested address
[ OK ]
[root@csrv log]# system-config-network

It seems that things are working (both IP addresses reach the server) although ifconfig reports just one entry for eth0, and it has the second (child?) address as it's IP address. Instead, I was expecting to see a listing for eth0:0 and eth0:1 or something.

Anyone know what I'm doing wrong? Those errors are quite unnerving.

Thanks,
Chris

you may configure multiple ip's in
# /etc/sysconfig/network-scripts
were you have to copy your existing eth0
#cp ifcfg-eth0 ifcfg-tho:1
then you can edit the ifcfg-eth0:1 (giving proper aliasing name specified), then change the ip's as per you require
finally save it restart the network services

cpbl · 06-10-2009, 03:35 PM

Quote:

Originally Posted by Shaik nayaz

you may configure multiple ip's in
# /etc/sysconfig/network-scripts
were you have to copy your existing eth0
#cp ifcfg-eth0 ifcfg-tho:1
then you can edit the ifcfg-eth0:1 (giving proper aliasing name specified), then change the ip's as per you require
finally save it restart the network services

Yes, I think I've accomplished exactly that (though using the GUI). But I get the error, as described above.

Thanks,
Chris