RTNETLINK answers: File exists... maybe because assigned a new mac adress

Posted by steven on Super User See other posts from Super User or by steven
Published on 2013-07-11T05:40:46Z Indexed on 2013/11/09 10:00 UTC
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I got a "RTNETLINK answers: File exists Failed to bring up eth0:1" on "ifup eth0:1".

I suspect it happens because i assigned a new mac adress in my VM's network adapter.

Can you tell me how to fix the issue?

My configuration looks like this:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
allow-hotplug eth0
iface eth0 inet static
    address 192.168.1.80
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 192.168.1.1

# Alias being connected to 192.168.10.x Network
auto eth0:1
allow-hotplug eth0:1
iface eth0:1 inet static
    address 192.168.10.83
    netmask 255.255.255.0
    gateway 192.168.10.10
    dns-nameservers 192.168.10.1

Why do I get "RTNETLINK answer: File exists.." suddenly? I worked with this configuration before without problems. All i did in the past is to renew the adapters mac adress.

At the moment I am connected to the 192.168.10.x Network and if I do

/etc/init.d/networking stop
/etc/init.d/networking start

then i got "RTNETLINK [...] falied to bring up eth0:1" but the strage thing is that i am able to connect to 192.168.10.83 via ssh from my host machine. But I cannot reach the internet from the debian client.

I hope it is clear what my problem is, now.

update

if i change my /etc/network/interfaces like this then "ifup eth0" fails, too with the same error!

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
allow-hotplug eth0
iface eth0 inet static
    address 192.168.10.83
    netmask 255.255.255.0
    gateway 192.168.10.10
    dns-nameservers 192.168.10.1

with verbose option enabled i got:

Configuring interfache eth0=eth0 (inet) 
run-parts --verbose /etc/network/if-pre-up.d 
ip addr add 192.168.10.83/255.255.255.0 broadcast 192.168.10.255 dev eth0 label eth0   
RTNETLINK answers: File exists Failed to bring up eth0.

same if i type this manually:

ip addr add 192.168.10.83/255.255.255.0 broadcast 192.168.10.255 dev eth0 label eth0

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