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Old 06-24-2008, 09:07 AM   #1
dwezel
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Registered: Sep 2005
Posts: 12

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Multihoming


I have added a second network interface to my interfaces file in /etc/networking but can't get the interface to come up, I get the error

"SIOCSIFFLAGS: Cannot assign requested address" when I issue the command "ifconfig eth0:0 up". Any help is much appreciated.

Here is what my interfaces file looks like:

auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 10.0.0.10
netmask 255.255.255.0
network 10.0.0.0
broadcast 10.0.0.255
gateway 10.0.0.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 10.0.0.1
dns-search remotecpu.com

iface eth0:0 inet static
address 10.0.0.12
netmask 255.255.255.0
 
Old 06-25-2008, 04:43 AM   #2
Mr. C.
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Registered: Jun 2008
Posts: 2,529

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You indicate you added a second NIC, but are trying to create an alias for the first NIC. Are you trying to bring up a new physical interface, or add an alias to an existing one?
 
Old 06-25-2008, 08:39 AM   #3
farslayer
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Registered: Oct 2005
Location: Willoughby, Ohio
Distribution: linuxdebian
Posts: 7,232
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Rep: Reputation: 190Reputation: 190
rather than
ifconfig eth0:1 up
Which is expecting an address to be assigned as part of this command

why don't you use
ifup eth0:1
which will use the address assigned in the interfaces file

Quote:
it-etch:~# ifconfig eth0:1 up
SIOCSIFFLAGS: Cannot assign requested address

it-etch:~# ifup eth0:1

it-etch:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1a:a0:xx:xx:xx
inet addr:192.168.0.4 Bcast:192.168.0.255 Mask:255.255.255.0


eth0:1 Link encap:Ethernet HWaddr 00:1a:a0:xx:xx:xx
inet addr:192.168.0.8 Bcast:192.168.0.255 Mask:255.255.255.0
the command you gave it is incomplete, it's looking for an address, but you never provided one to assign.
Quote:
it-etch:~# ifconfig eth0:1 10.0.0.2 netmask 255.255.255.0 up

it-etch:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1a:a0:XX:XX:XX
inet addr:192.168.0.4 Bcast:192.168.0.255 Mask:255.255.255.0


eth0:1 Link encap:Ethernet HWaddr 00:1a:a0:XX:XX:XX
inet addr:10.0.0.2 Bcast:10.0.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:209

Last edited by farslayer; 06-25-2008 at 08:47 AM.
 
  


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